If this is all true, she must have a very forgiving, compassionate heart.
She can't be doing it for the money....she already has that...
..she must be truly selfless & full of mercy.
Maybe despite everything, she still loves him. At least on some level.
After 28 years together and 7 kids she probably still loves him.
I think it goes beyond that. Theirs was a truly dysfunctional family and any woman who jumps back into that dysfunction has some problems of her own.