Trolls

[Its an old cops trick]

The risk of this quest has become disproportionate with the reward following recent AI changes.  Remove dispel from witches as they spam it endlessly and maybe add more cover to the exterior parts of the quest.   A personalized gold reward or a reward system similar to the one found in the Mongrelwood would be ideal.

[Scumlord Spiffy]

Very much reflected here. It's simply not worth doing unless you're bored.