Minister William wrote the Maid a note, excusing her from work for the next two weeks for mandatory bed rest as she recovered. Getting Wolfe to repair her damage for free had been a stroke of luck, and there was no telling what he would demand next time, especially now that the Minister knew that he was looking for a group of five Rank One Demons to make into a Pentacle.
Unlike most other species, the Demons were well aware of the price of a favour, and what it would actually cost when you agreed to an unspecified price for a favour. So, it would not be as easy for Wolfe to find his Pentacle here as he might hope, unless he went for Demons like the Maid, who were injured and desperate to get out of their life at the bottom of society as perpetually Rank One Demons who didn't have the power to do more complex magic that was needed by countless skilled jobs.