SH, sorry you are having your ups and downs. It happens to me every month, ha ha.
I can see how your H's mom (and family) can prolong his MLC. Unfortunately that's something you have no control of. The good side I can see from this is hopefully H can see the negative side of the family's history one day and realize that it is not a life he wants to live. If/When he has that awakening, he will come back and most likely for certain.