I am convinced that she is a VERY disturbed person. Her creep 'husband' is just an immature, selfish, stupid lout but SHE is disturbed...or what would she need him for?
I agree with you on that too. She exhibits signs of extreme narcissism, which makes it really hard for her to be effective as she has such high emotional needs that she can't absorb bad news without blaming someone else.
If ever life imitated art, she imitates Potter in "It's a Wonderful Life", which has its limitations as a film, but it illustrates her personality defects.