He was interested in her family?? Little old Nina?? Aww shucks.

"Well I'm muggleborn." she began, maybe that wasn't the thing you should tell someone immediately but oh well, she didn't mind. "We just moved to England, actually. When we found out I was a witch. That way the family could be closer during the holidays and such. They wanted me in Hogwarts, obviously. We had heard it was the best school."