While I can be amused by her antics and breakdown as much as anyone (just as laughing at old people is fun, laughing at the emotionally crippled can have its amusements) I don't really blame her a whole lot for them.
The girl has never had a normal life. She was never taught how to grow up, allowed to make mistakes that go unnoticed, given reasonable limits with which to rebel. Yes, she has been immensely rewarded for being warped (and warping herself) to our collective entertainment but I would argue it takes a rare person to go through her life and come out the other side of it without problems.
So yeah, she amuses me in some ways, but it is the same way
Frank Chu amuses me. Yeah, he's all screwed up but I don't really blame him for it.