Bad Will Hunting
It was obvious that he hadn't gotten through to her at all.
Nyssa straightened her hat and hefted the shotgun, caressing it lovingly as she gazed into the woods behind the pub.
The Doctor hated it when she was like this. Partly because of how her personality changed, partly because she scared the wits out of him, and partly because she always left a horrible mess.
He would try to talk her out of it, of course. It never worked, but it would at least buy the boy a little time.
"Now, Nyssa--" he began.
"Shhhhh! Be vewy, vewy quiet..."