Yeah, Florence thinks sports are pointless. In the competitive sense, that is. And she doesn't really spout being a pacifist, she just generally likes to avoid violence. Unless it is committed on her behalf.
Cousins somehow works! I think she's a year older, but she spent her first few years of life in Egypt, and she's definitely not a society girl. Not a blood traitor (even tho her mum married a half-blood, shame on her) but not a purist in the strictest sense, either. She just thinks purebloods are better than everyone else.