What should I do regarding my wife's ill-suspicion of people and her spying on my mother's personal account, and the subsequent boycotting of my mother and her cousin's daughter, and her refusal to visit my mother or receive her in our home, knowing that I want to preserve my family and my daughter, but my mother's satisfaction is above all else?

If the wife spies on her husband's mother, she is sinful and must repent and seek forgiveness from the mother. She must obey her husband in visiting his mother, but this is not an obligation upon her. The wife does not have the right to object to her husband bringing his mother to live with them, nor does she have the right to leave the house without his permission.

The husband is advised to combine righteousness towards his mother with kindness towards his wife, and to strive to reconcile between them with wisdom and gentleness. Divorce is not an easy matter and should not be resorted to except when reconciliation is impossible. If the spouses can reconcile and live together amicably by overlooking minor faults and compromising on some rights, that would be better, especially if there are children.