re: request for DID resources for a friend, abuse
@Fidgetcetera This is somewhat Ironic, I have DID, and I'm kinda the witchdoctor for this stuff but I've kinda had to step back because one of my systems had a meltdown and now he needs care.
The resources already listed are Good, but one of the tricky parts about DID is the autohypnotic aspect. In trying to Diagnose someone you suspect, you can actually Trigger a personality split.
In this case, an abusive, subconscious alter doing a Mr Hyde and the others having no memory of the behavior is pretty typical of a traumatogenic alter that's been repressed. We like to call those folks 'Sealed Evil, in a Can'.
The good news is that some of those Monsters can end up Lifelong friends and allies once you figure out why they were Hungry.