Well, I seem to remember him saying "I told her not to mess with it, and she's doing just that..." I'd say she needed to have the begeezus scared out of her--might save her from blowing her own head off from messing with it when he's not around.
Kinda reminds me of what a friend and I did to his younger sister once when we were about 16 or so. She use to like coming around fiddling with things when she thought no one was around, so we loaded his .357 with empty brass and one with a primer. Sure as the sun comes up, she started messing around being "curious" one day unsupervised and found the chamber with the primer. Scared the living hell out of her and scorched the closet door pretty good--she never went into his room again, even when he was there. His dad wasn't real happy about it, but the girl was rock-stupid and went out of her way to do exactly what anyone said spacifically not to. Finally learned her lesson on that one.