OP here, I will be forever in your debt if you do! For some reason this plot bunny just won't stop hoppin', and I really would like to see this filled.

I had a great idea for a jump off point as well. When I did the thieves guild I accidentally burned an extra beehive at the Goldenglow estate, and Mercer was so mad. This could be a good point for the DB to humbly suggest she deserves to be punished.