Maybe the initial invitation was just curiosity then, because she'd piqued his interest with the unconventional hex. And then decided to keep her around because of the Potter/Quidditch details. I wonder: does he ever change his mind about someone? Does anyone get invited in, and then later on get pushed out again? I don't remember anything like that, but it's been a while since I read those parts, so maybe I'm forgetting something.

Kimberly//Ravenclaw