So here's something you missed, OP: if this “Lucy” survived, how did she? Call it a hunch, but I think this thing works on Medusa rules (i.e., you’re safe if you look in a mirror). Yes, Annie saw Sasha and the Stalker in the backseat, but I doubt that she was killed by him that way. He probably wanted to fuck around with her, drive her to the point of saying, “Alright, I’ll look at you directly.” Maybe that's how Lucy survived. Maybe I’m wrong. Sorry about your friends, OP.