Is it permissible to abandon one's wife in bed (refrain from sexual relations) for more than two months as a punishment for her ill-treatment of the husband's family, knowing that the husband shares the room and bed with her and discusses household matters with her, and that the wife is trying to reconcile with him?

The questioner did not clarify the true nature of his wife's misconduct towards his family. If it involves insolence through insults, verbal abuse, and vulgarity, then he may abandon her in bed if advice is ineffective. However, if the offense is merely harshness in speech without insult or abuse, then the husband should admonish her and not abandon her, because jurists have stated that if a wife uses harsh words towards her husband without insult or abuse, he should not abandon or strike her. It is even more appropriate that he should not abandon her due to her harsh dealings with others.