Let me clarify this psak. On the one hand, the daughter is not actually in mortal danger that we need to be worried that perhaps she will die from lack of food or from the beatings or difficult work. It also seems that the mother is not forcing her to swallow life-threatening pills. On the other hand, the mother has threatened to commit suicide if her daughter is taken from her. While it is true that people sometimes make threats that they don’t carry out (Shavuos 46), but the Chofetz Chaim (Be’er Mayim Chaim Rechilus 9:12) has ruled that concerning life and death issues we need to be concerned about threats. This is seen from the incident with Gedaliya who was told someone threatened to kill him. When it comes to life and death, we need to take seriously even an unlikely danger. Furthermore in our case the doctors have agreed that it is possible that the mother will commit suicide…. In this case where we want to remove her daughter from her custody when the daughter’s life is not actually being threatened – who says that the daughter’s life is more important than the mother’s? Perhaps the life of the mother is more in endangered than that of the daughter? This my explanation of the gadol’s ruling of not removing the daughter from the mother’s custody.
I presented the facts before Rav Eliashiv and he said the following. “Do not take the child from the custody of the mother who threatens to commit suicide – based entirely on circumstantial evidence of beatings that seem to done by the mother. As long as there are not actual witnesses that testify before us that they saw the mother cruelly beating her – it is impossible to remove the daughter from her custody. That is because it is a case of pikuach nefesh also for the mother – in particular since the daughter has not requested to be removed from her mother’s custody. Similarly it is impossible to remove money from another person based on circumstantial evidence as is explained in Bava Basra (93a)… It would be different if the circumstantial evidence is absolutely clear that the mother is beating her such as if we find that the daughter has bite marks on her back which obviously can not be self-inflicted. The fact that the mother gives her daughter sleeping pills is also not a reason to take the daughter from her custody – since it is not clear that it is dangerous. Therefore we must do everything possible through the neighbors and friends who can speak persuasively with the mother or threaten her. But it is difficult to remove the daughter from the mother.
However if witnesses comes and testify before us that the mother is viciously beating her daughter then we are obligated to remove her from her mother’s custody. This is so even though there is a small possibility that she might commit suicide. That is because it is not the daughter’s fault so why should she have her life endangered because of the concern that her mother might commit suicide. Therefore when there are witnesses the daughter should be removed from her mother’s custody.”
Summary: 1) If it is clear that the mother is viciously beating her daughter, the daughter should be removed from her custody and we are not concerned with the mother’s threat to commit suicide. 2) If no one has actually witnessed the mother beating her daughter but we deduce it from circumstantial evidence – there is no basis of removing the daughter from the mother. That is because the mother’s life is also possibly endangered. Thus we are forced to do nothing (shev v’al taaseh). All we can do is make efforts through talking and deeds to try to stop the mother from beating her daughter. Heaven should be merciful.