Interesting FY. You would assume the SA would be the primary issue. My W issue is solely the mother (sort of). My FIL had problems with alcohol when W was a teen. He was the primary nurturer in the family. So he's no longer in that role and MIL was her normal, me first, bitter self. W was/is not loved unconditionally by her mother. That has to hurt. W was never smart enough, pretty enough, etc.

I think your plan of action is all you/we can do. Be the type of h only a fool would leave. Show them what unconditional love means.

M - 42
W- 37
S's - 9,6
M-12
T-14
FIL- diagnosed with fatal disease spring 2011
ILYBNILWY - march '12
FIL - died jan '13
W Moved out week later