Here’s the blurb:

Innocent Janet is just trying to work her way through life, playing by the rules but missing out on living life the meantime. When a group of lazy college guys decide to sacrifice her to a demon in exchange for an easy grade, Janet finds herself in a world where her soul is at stake.

Her only chance at survival is to offer the demon a different kind of sacrifice, the kind she can only ever make once. Will the sacrifice of her body be enough to save her soul, or is it already lost to the dark-eyed demon?