How should I act regarding a disagreement between my husband and my mother concerning changing the marital home, where my mother refuses my return to it and my husband threatens to make a choice that will not displease my mother?

Returning to the husband's home and obeying him is obligatory upon the wife. What the mother asks for is not a legitimate right upon the husband. Therefore, obedience to the mother in this matter is not binding. The wife must be gentle with her mother and explain the religious ruling to her, and that her actions could lead to the deterioration of the marital relationship.