This makes me sad, because I used to play with Rona and genuinely liked her as a person. I hoped it was being a younger player that was causing the self-centered behavior and inconsistent "friendships" and that she would grow out of it.

No idea who Beth is, but Rona had a lot of potential. When you're on her good side, she's fun and friendly. It's just that getting on her bad side seems very easy and also very out of nowhere: one day you're friends and the next day you're not. That's the sort of thing I hoped was a result of being 24. I had the same thoughts about Milk, who seems to have a lot of fun ideas but not a lot of patience.