What specifically are you improving about yourself?
Do I read you right that you are trying to take her inheritance in a D?
I see a thread in your posts about control. You mention you have done everything for her and she's been rather helpless (that's a form of control), that you have "let her" drink (illusion of control), and that you "need her to" do this or that (more control), and you're proactively filing for D (to maintain a sense of control?) and wanting to leave her with nothing (controlling her circumstances even after a split). I think this is something you could consider if might have contributed to your current problems.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17
