BZZT! She is facing the consequences of her actions slowly but surely. and as you change things, she HAS to change. That's how interpersonal communications work.
You're just pissed because you want her to 'do something to make this better'. Well that ain't gonna happen because SHE is not a woman who has the character to 'do something'. If she WAS, she WOULD HAVE.
Stop whining and letting the 'little boy' control your feelings. She isn't getting a 'free pass'. She's lost HER home, HER marriage and HER family. She just doesn't 'see' it yet. But she WILL.
Meantime, you're all pissed because you got hurt and feel abandoned.
Well, go ahead and take her to task, don't give her anything, be sure to be angry with her whenever you talk to her. See how far that gets you.
Or, take care of YOU, realize she's not logical or sensible, and that she hasn't been much support for you for a long time.
She's doing WRONG right now and you have no say in it except that YOU won't approve, support her or participate.