Hi Luna-Lee!
I (... am finally getting around to Networking) have Greta Gillenwater who is a third year Gryffindor and it appears they have some overlapping classes. She is studious but is not ... quiet. She can be quite bossy, and a bit of an unwanted mother hen and loudly opinionated about what she thinks is the right way to do things. She doesn't think she looks for confrontation and is trying her best to be ladylike (but thinking you are doing certain things and actually doing certain things are very different). She approaches things with the best intentions. She likes to talk, and would love to talk about the world because as a second sibling muggle prehogwarts she was fascinated by the wizarding world but never apart of it. She comes from a Quidditch obsessed family but as the first proper game she went to somebody died rather graphicly she isn't particularly keen on the sport as she does value self-preservation...