I don't really mind if the author takes this in a dark direction though personally I'd prefer it to just stay as some mindless fan service with a pet/slave bunny girl.
I have a bad feeling about where this is heading. It reminds a bit too much about that other story I once read,
about a worker on dairy farm falling in love with one of the 'cattle' (cattle being demihuman girls). At the end of the story her productivity declines and the manager decides to feed her to the dragon also raised on the farm, and being aware of the two's 'relationship', asks the worker whether he wants to see it through to the end. He declines though, not stomaching it...
This will good story if not for the chapter 8 that make the girl eating at the floor. This will ake me think that male just after the body not the person