Interesting that her mother describes the boy as "hateful" but not the girl (who seems just as, if not even more, hateful). And is prepared to meet the girl's mother (not father) and not the boy's parents. Despite the fact that Brianna was, essentially, a boy (Brian). Likewise society now howls for the simplistic ("sort out social media - ban phones for teens"). These kinds of loonies will always be around and will always find a way to kill (in America it's usually with guns).