It was about Multiple Personality Disorder. That's one reason all of the alters had to leave their door open to invite her in. It's why she was the "Original Angel" it represents the alters taking on a persons pain when they can't do it themselves. That's what the FBI guy meant when he said that to French about taking…

It's all about the shooter, she is the only character. The others are her alters. The show is about multiple personality disorder and the alters are taking on the pain of the abuse the shooter experienced through her life. Hap was an alter, Homer was an alter, even the dog was an alter. She wasn't making anything up,…

It's about multiple personality disorder. The "angels" are alters. Everyone she speaks to or you see in the show is an alter of one person, the shooter. The goal is for the alters to intervene and prevent the shooter from killing kids at the school. Even the dog was an alter.