Sacrificed to the Beast belongs to one of the oldest patterns in storytelling, the offering made to something monstrous, and romance has been rewriting that pattern for as long as the genre has existed.
The entry listed under Jessa Kane here sits across fantasy, romance and science fiction at once, a triple shelving that is standard for books in which the beloved is not human. Three hours is the working length for the form: a single premise, taken at pace, without the connective tissue a full novel would be obliged to supply.
What the title declares is what we report. The rest belongs to the listener.