I have Jessica Williamson, she acts snobbish, etc. but she can be a good listener, and in Y11 she'll be a sixth year. She won't be mean to Sam because she's not one of those to really judge on first type. She's mean to others only because they're mean to her since her father was sent to Azkaban. Sorry I don't have more info, she's undeveloped, but just let me know.