I was considering a more sinister possibility: Did he tell her to put on the mask by saying that he had a "surprise" for her? She would've thought he was putting a necklace around her neck, until it was too late. It's absolutely sickening to type this. :anguish: Why did he strangle her AND shoot her? Was it harder than he thought to watch her struggle to breathe? Or maybe it wasn't for humane reasons. Maybe she was just putting up too much of a struggle and he shot her to end the fight? Not facts. I'm just speculating.