Outing went wrong
The very night they all had dinner as soon as Medusa released released butler from her magic spell. The woman had no idea that the butler was the in charge of the kitchen. However she came back from Lydia's room but did not intend to release the butler but of course anything should be done for food.
That's what made her comply with the command of Lydia and the succubus relapsed him. However she already went to check on Malcolm, how was he doing in his quarters and was coping with the other staff. After all, it was his first experience too and he needed to do his best to mingle on with the vampire. It was obvious that they were a weaker race and not to forget the fact that all the servitude staff belonged to class C vampires.