2022 horror novelette. Starr comes to work for the crime boss as
handler for her pet ghoul—who may be more than the flesh-eating
monstrosity she appears.
Well, that gives you some clues as to the sort of story this is;
and if you've read Muir's Locked Tomb series you'll have some idea
of how she tends to treat the animate dead.
Everyone here has a secret past. Everyone here is seriously messed up.
The entire intricate setup will come apart in a welter of glorious
carnage. And it's all great fun. It's gory and intimate and
genuinely horrifying, not on the "rar here is a monster" sense, but in
the "here is an apparently-functioning human being who still sleeps at
night in spite of having done that" sense.
(This was originally for Amazon Prime subscribers only, but is
apparenty now available on Kindle Unlimited.)