>>1610640Then perhaps A could be the best course of action. Let sleeping dogs lie, so to speak.
B could also work, though we would have to keep an eye on our camera so it's not lost/taken. Plus we would have to wait to get the pictures made before we can really do anything with them. Not necessarily a problem, however.
Alternately, we can always go C. Get her down, while having her promise that she won't try any threats outside of Mahjong forfeits (taking pictures might help in this regard as well, but I'll leave that up to you).
In fact, I think that's what I'll pick. C, let her down on the promise of no pranks outside of Mahjong.