its from the police interviews with her family and friends
The police released these interview documents? Better link for me. So basically this is hearsay from family and friends? That is fine but please do post that link to the police interviews. Which police agency released these interviews? Links will be great. Thanks.
Anyone with a basic level of common sense can come to the conclusion that this kid had serious mental health problems in order to even be able to do something like this. Specific diagnoses, "confirmation" of family history info, etc....is not necessary. If you refuse to be willing to use common sense or are incapable of it, that is enough "evidence" to me that you have no clue what you are talking about AND your insistence that someone else provide evidence to prove their point is stupid and makes you look like an idiot.