They didn't want to follow a Wraith into caves on Weather Control. That's not really something that can be countered, nor should it even be counterable. It's just being...Not dumb, I guess?
I mean, if a monster wishes to waste his own time by trying to cheese or lure us into caves when we're not stupid enough to bite, it's his downfall.
The monster should probably at least attempt to fight, and if fighting won't grant him a down it's either because the player's outmatched, or because the game is unbalanced.
Wraith's not too good against premades at any rate.