Did the wife err by not informing her husband that her brother left her, his wife, and the children in the market and departed, and is the husband entitled to boycott her and allude to her disobedience?

A husband's jealousy over his wife is a good thing and a sign of love, but it must be moderate. Excessive jealousy can cause distress to both parties and is contrary to the good companionship enjoined by the Sharia, especially if accompanied by insults, degradation, and abandonment. The wife should avoid anything that provokes her husband's jealousy and work to build trust between them. It is advisable to pray, communicate with the husband, refer to the Sharia, and seek help from wise people to reconcile them if necessary.