My first instinct was to kill them.

[ Castiel admits this almost sheepishly. He reaches up, rubs at the back of his neck. Now this is for sure a nervous gestures. Employed frequently around Dean - when being questioned about his virginity by someone who places stock in such concepts, for instance. ]

Apparently the option is frowned upon as it risks a reset.

[ Which... about that. ]

I'm not sure you've realized that yet. A very young, juvenile woman in the light house can eradicate us all at will.