What is the ideal way to deal with a mother who constantly complains about her husband's mistreatment, knowing that these complaints negatively affect the children and their relationship with their father, and that the father is often wronged?

Children must be dutiful and kind to their quarreling parents, whether the parents are in the wrong or wronged. This obligation does not cease if one parent mistreats the other. The parent who is in the wrong should be advised gently and kindly, without assisting them in their wrongdoing, and silence should be observed when they are angry. It is also recommended to be patient with them and to supplicate for their well-being and righteousness.