She is the girl you avoided all your life in school, the kind of girl that suggested the worst ideas possible because she wanted to believe she was "crazy".
Not the typical anime fan, but surely the kind that was notorious because of how little attempts of being friendly she had, I mean, she herself said it, right? She had no friends at school, although there are pictures like the one that anon shared, with some friends.
And now that I think about it, that anon might be right. Daron probably says she has no friends because either they didn't help her during her bullying and/or one of them got the guy she liked and this broke their friendship completly.