OPINION
COATS, Judge.Jane Doe1 was indicted on several charges that involved sexual misconduct with her children.2 As the result of a nego*1108tiated agreement she pled guilty to a charge of lewd and lascivious acts committed towards a child.3 Imposition of her sentence was suspended for four years pursuant to a number of conditions.4 The State of Alaska brought this sentence appeal. We conclude that the trial judge erred in not imposing a period of incarceration.5
The charge for which Jane Doe was sentenced arose against a background of a long history of sexual abuse of her children by her second husband, John Doe. It is necessary for us to discuss this background of sexual abuse in order for us to explain our reasons for disapproving the sentence that was imposed.
In 1964, Jane Doe married and had two children. Alice was born in December of 1964, and Bob was born one year later. Following a divorce in 1970, Jane Doe married her present husband, John Doe, in 1974. Prior to their marriage, Jane and John had a child, Charles, in 1971. In 1977, Alice and Bob were adopted by John.
Alice Doe testified that her father, John Doe, first had intercourse with her at age five.6 She said that her father continued to have frequent intercourse with her until, at the age of fifteen, she confided in a school counselor, and ultimately criminal charges were brought against her father and mother.
Alice testified that her mother first found out that Alice was having intercourse with her father when Alice, then in the third grade, told her mother. According to Alice, she and her mother and her father had a conference about her father’s sexual activities with her. Alice stated that as a result of this conference she got in a lot of trouble with her father, and her mother threatened to spank her if anything similar happened again. According to Alice, her father continued to have intercourse with her with increasing frequency as she got older, and her mother was aware of this activity. When Alice was in the sixth grade, her mother, believing that Alice might be pregnant by her father, had Alice tested for pregnancy. The test indicated that Alice was pregnant, but Alice had a miscarriage. John continued his sexual activities with Alice. Alice testified that her father had her engage in cunnilingus and fellatio. When she refused to have vaginal sex with her father, he would force her to have anal intercourse.
Bob Doe, age fourteen at the time of this case, related a similar history of sexual abuse. Starting at age seven, Bob was made to participate in oral sexual acts with his father. Bob stated that his father also had anal intercourse with him.
The pattern of sexual acts ultimately involved the entire family. During many of *1109these sexual acts, pictures were taken with an instant camera. The specific charge against Jane Doe arose out of an incident where Alice’s father had Alice put on a “dildo” and Alice then had intercourse with her mother. Apparently during this incident Alice’s brother Bob was present along with John. Alice also testified about one incident where she had sexual contact with her mother and about another time when her father had sexual intercourse with both her mother and her. Bob Doe testified that he had sexual relations with his mother on several occasions.7
The trial court found that John Doe was the primary instigator of the sexual relations involving the children and that Jane Doe was merely a follower in these activities. This finding is supported by an overwhelming amount of evidence. The evidence indicates that Jane Doe was a submissive and dependent woman who acquiesced to her husband’s unconventional sexual demands and who sacrificed her children’s welfare because of her own inner needs of security.8
It is difficult to precisely determine the extent of Jane Doe’s knowledge of and participation in the family sexual activities. However, the record does indicate that her involvement was extensive. The record supports the finding that she knew about Alice’s sexual involvement from the time that Alice was in the third grade. The extensive record of sexual acts, photographs, and Jane’s admitted participation demonstrate her involvement.9
One last issue of sexual involvement worth noting concerns some pictures of nudity and sexual play taken by Jane or her children. The fact of this picture-taking is significant because it occurred during the six months when John was away working on the North Slope. From the state’s point of view, this episode casts doubt on Jane’s assertion that all of the family’s sexual activities occurred because of the forceful insistence of her husband. It is clear, however, that such pictures were specifically requested by John in letters and probably in phone calls. When the state asked, “How could he have had such control over you?” Jane replied, “I don’t know — because he’s my husband, he called, we talked on the phone, he had the letters and he had the money.” Thus, Jane contended that John continued to exercise control over her even *1110at long distance. She insisted, however, that the family did not engage in the “sex act” when John was absent.
In imposing a suspended imposition of sentence, the trial court noted that Jane Doe had committed a serious offense. However, the court emphasized a number of factors that were strongly in her favor. Mrs. Doe had no prior criminal record. The court found that her husband was the person primarily responsible for the sexual acts with the children and found Mrs. Doe acted under strong provocation. He found that there was little chance of Mrs. Doe ever again committing similar acts and therefore concluded that she did not present a danger to the public. The trial court also concluded that a sentence of imprisonment was not necessary to express community condemnation of the offender and reaffirm societal norms.10 However, in considering reaffirmation of societal norms he expressed “some trepidation that I might not be properly weighing that factor....” In carefully weighing this factor, the trial court found that imprisonment of Mrs. Doe would not further her children’s best interests. The court emphasized that community condemnation of the offender and the reaffirmation of societal norms could be adequately expressed by an appropriate sentence for the dominant offender, John Doe. He also emphasized that Mrs. Doe would encounter community condemnation throughout her life from people who were aware of her offense.
We agree that it was appropriate for the trial court to consider the welfare of Mrs. Doe’s children in considering whether to impose a jail sentence. The concern of the trial court was amplified in the psychiatric report from Dr. David Coons:
The primary risk in a family incest case is that the intervention can become more destructive to everyone, including the children, than the disease. Unless there is no other alternative, total disruption of the family is generally the worst possible result. The goal is usually to preserve either the whole of the family or the largest fragment of the family possible. That is why I would again emphasize that the children must be actively included at some point in the evaluation of this case and Mrs. Doe’s case. If possible, the disposition in those cases should at least to some extent reflect an overall plan for the best of all parties concerned. This is a family case and not an individual case from the ‘mental health’ point of view.
These concerns frequently do present difficult problems for a sentencing judge and are worthy of serious consideration. However, the record shows that in this case none of the children were living with Mrs. Doe; at the time of her sentencing they were in various state placements outside the home. A condition of Mrs. Doe’s probation was that she was to have no contact with her children without the permission of the children’s counselor. It does not appear that consideration of the children’s welfare would prevent the imposition of a jail sentence in this case.11
*1111We agree with the trial court that there are many factors which substantially mitigate Jane Doe’s offense. However, as the trial court recognized, this is a most serious offense. The offense is particularly aggravated because of the great number of episodes of sexual abuse that occurred over a long period of time. We believe that it was necessary for the court to impose a term of imprisonment in order to express community condemnation of those who sexually abuse children.
We DISAPPROVE of the sentence imposed as being too lenient.12
. We have used fictitious names for the defendant and her family in this opinion. We feel this is necessary to protect the privacy of the children involved in this case.
. She was originally indicted on three counts: 1) sexual assault in the first degree, AS 11.41.-410(a)(4); 2) lewd and lascivious acts committed toward a child, former AS 11.15.134(a); *1108and 3) rape, former AS 11.15.120. Count I, based on conduct occurring after January 1, 1980, is charged under the Revised Alaska Criminal Code; counts II and III are based on conduct that occurred prior to January 1, 1980, and are thus based upon the former code provisions.
. Former AS 11.15.134(a) provided:
Lewd or lascivious acts toward children. (a) A person who commits a lewd or lascivious act, including an act constituting another crime, upon or with the body of a child under 16 years of age, intending to arouse, appeal to, or gratify his lust, passions, or sexual desires, or the lust, passions, or sexual desires of the child is punishable by imprisonment for not more than 10 years nor less than one year.
. The conditions imposed were standard conditions of probation, except they limited Jane’s contacts with her own children or other children under the age of eighteen, required her to receive mental health counseling, and required her to pay the State of Alaska a reasonable amount toward the care of her children.
. In a sentence appeal brought by the state on the ground that the sentence is too lenient, we are not authorized to increase the sentence but may express our approval or disapproval of the sentence. AS 12.55.120(b). The standard we apply on review of any sentence is whether the sentence is clearly mistaken. State v. Lancaster, 550 P.2d 1257, 1260 (Alaska 1976); McClain v. State, 519 P.2d 811, 813-14 (Alaska 1974).
. The trial judge found that the most accurate picture of the facts of the case was given by the children at the grand jury proceeding. We therefore have relied on the children’s testimony before the grand jury in setting forth the facts.
. The incidents with Bob Doe, which were the basis for counts I and III of the indictment, were ultimately dismissed as part of the plea agreement. The record also reflects that John Doe also had Bob and Charles have intercourse with their sister.
. This conclusion is based on an extensive array of expert testimony. In a psychiatric evaluation which was part of the information provided to the trial judge with the presentence report, Dr. David Coons stated that,
Mrs. Doe is a quite inadequate feeling woman.... My impression of Mrs. Doe is that she was very afraid of making any waves which might have left her both financially and emotionally independent. In this sense, she has many features of a battered wife (emotionally, if not physically). Because of this, she appears to have gone out of her way to have rationalized what she did know about the sexual relationships in the family and to just overlook as much as possible. Even now, she has extreme difficulty believing or admitting the extent of the problem or the gravity of it. She tries to explain that she did not want her children to grow up with the rigid repressive background that she did, that her children did not really tell her what was happening, etc. On the other hand, she did feel guilty about what knowledge she did have about it, knew that the family relationship was in many ways pathological. However, the underlying theme appears to be that she simply felt very helpless and powerless. I suspect that, at least at times, she would have done just about anything her husband asked her to do (she denies that she would do “anything”). It is my impression that Mrs. Doe did, in a very ineffective way, try to curtail them.
A family physician wrote of Jane Doe:
I think that her greatest weakness was putting the preservation of her security through her marriage to her husband above the physical and emotional welfare of the children. It is a sad commentary but I believe she chose to trade her children’s welfare off in exchange for her own security of staying with a husband who was abusing them. It is true that she participated in this but I think more as a follower than a leader or initiator.
.Although she admitted some knowledge and involvement, Jane minimized the extent of both her knowledge and participation.
. State v. Chaney, 477 P.2d 441, 444 (Alaska 1970).
. It is difficult to predict the future status of Jane Doe’s relationship with her children. The trial judge heard testimony from the children without their mother present. Alice said she did not want to have any contact with her mother until her feelings about her mother changed; she did not know when that change would occur. Bob told the judge he did not want to have any visits from his mother. Charles was seeing his mother occasionally at the time of sentencing and wished to be reunited with her.
A psychologist, Dr. Lynn Ravsten, who performed a psychological evaluation of Jane Doe at the request of Jane Doe and her attorney, testified that it would be traumatic for the children if Mrs. Doe received a substantial jail sentence. Dr. Ravsten’s reasons for this statement are not explained, but it appears that this conclusion is based upon the assumption that Mrs. Doe was in the process of reuniting with her children. We believe that it is proper for the trial judge to give weight to mental health goals which affect the children. However, even assuming that the trial court concluded that it was wise to reunite Jane Doe with her children and that the trial court placed substantial weight on Dr. Ravsten’s statement, a jail sentence that would have been less than substantial does not seem to have been precluded.
. We specifically do not disapprove of the fact that Judge Stewart imposed a suspended imposition of sentence. However we believe that a period of imprisonment of 90 days in jail, imposed as a condition of probation, would be the minimum which could be justified by the facts in this case. Even given the highly favorable facts favoring the defendant which the trial judge found, we believe that a substantial period of imprisonment of up to three years could also be supported by this record. The range of sentences in a case such as this is particularly broad because of the many complex issues that are involved. We believe that the trial judge is much better situated than we are to resolve these issues.