Those people can't do anything for him now. The only place he belongs at this point is a mental facility. He's lost all connection with reality, doesn't understand right VS wrong, his sense of self is shattered. Nobody online can help with that, and nobody in his real life can help with it either. The only thing anyone can do to help Chris is put him in a home, and with this I think it's gonna be up to the legal system to decide whether or not to do it.
For me personally, I still believed he had at least some understanding that if he raped someone, that would be bad. (But, he doesn't even seem to grasp what he did here
was rape, so that's out the window.) I also thought that he wouldn't be able to overpower anyone if he tried to do it. (But, a dying old woman can't fight back against anything, obviously.) As for Barb specifically, it kind of goes back to my first assumption in that I didn't think he'd hurt his mother (The Idea Guys' extortion notwithstanding) since she was the one person he was actually close to, but instead it just gave him the opportunity.
TL;DR: I was naïve.
Does anyone here think this wouldn't have happened without the Idea Guys? They caused Chris' slip into outright insanity, and would he have done this if he still at least had one foot in reality like in the old days? Or do you figure such a dark outcome was inevitable? I know the Idea Guys just exploited delusions that had been there for a while and made them stronger, so maybe he would have gotten into this bad a state eventually on his own?
I don't really know myself.