I hate her because she was a bitch. She was so arrogant. I feel like if she talked to steven before helping team magma/aqua about ya know, the whole draconoids thing, I feel like he worked been more reasonable.
She ignores everyone, is overly cocky, gives no actual reasoning for what she's doing, and if it wasn't for you carrying a handy-dandy meteorite , she would have killed everyone.
The multiverse thing I don't mind. I love it; it connects all the past games so that everything can still be canon. But she's such a fucking bitch.
I wish fug stabbed her in the game as well.