I didn't liked how she lied to my boy Naruto. Even a naive, idealistic moron like him caught on her BS and actually he said he hated people that lied to themselves. She got Naruto that state that he actually hates a certain kind of people. That's how low he though of her at that moment.
She has a superiority complex, when she said she finally caught up with Naruto and Sasuke I was blown away, is like she lives in her own little world.
She gets has some rage problems, a short temper is a bad trait to have.
She relies way too much on Naruto, Naruto is just a boy, the weight she puts on his shoulder is staggering, like she blames him for going away and failing to bringing him back is his fault. Not to mention that she didn't even went to the mission to retrieve him.
The Sasuke stuff is just meh, she is not the first woman to do crazy things because she is in love with a bad egg.