You should be grateful. She is sacrificng her looks, her health and the later years of her life just to lighten the tax burden you have to pay out in other areas.
Not at all. But while your sensitivity does you credit, I'm guessing from yout attitude that she moved on, not you. If thats the case then you have no responsibility for her and she has a track record of crappy life choices. After a while you learn you cant save people from themselves.
There is two things whether your type of personality care about people in general, want to help them or deeply inside you still believe in possibility to be with her
Because you DO care, and you value what you had together. You can still be friends.
Cause it's bad for everyone's health