What is the ruling on a mother-in-law's interference in marital life and her imposing her opinion on raising children, despite her own lack of commitment, and how can she be dealt with to protect the children?

Parents should not interfere in the private life of their son's wife or in the upbringing of their grandchildren, except through sound advice. If the husband’s mother is abusive in her treatment and lacks commitment, the wife should be patient, repel evil with good, and admonish her. The husband should intervene wisely to rectify the situation, seek help from someone whose words are accepted, and supplicate for her to have good character. If she attempts to guide the daughter in an unsound manner, this must be prevented, and the daughter should be taught what will protect her from bad ideas. The wife has the right to an independent dwelling with its facilities if she is living with her husband’s mother.