I find her personality (or the one she plays for the camera) extremely irritating.
Ditto. And she has a big fucking head. I mean physically. I'm sure accentuating it with the scene foof-hair, and the head:body ratio she has going on are most of why I think this, and just to cover all my bases let me go ahead and say there's nothing wrong with having a big head, but hers seems too big for her body.