The Demon Mates

Trixy Nightshade is the adopted daughter of Martha, and she hates that she'd been adopted at the age of 17 when her birthday was in a few months. She just wanted to turn 18 and go her own way, but now, she's stuck with a royally fucked up family.

The husband teaches the children how to kill mercilessly, and Martha goes out to fuck nearly every man she sees. One of the men being a man named Jarold, who is the husband of Mary Mayberry.

Trixy is friends with Mary since the older woman used to visit the orphanage to teach the younger children, and when Mary finds out about Martha and her husband, she goes into a rage and ends up killing them both and herself.

Unfortunately, Martha survives and gets credit for surviving a psychopathic bitch, which is what leads to Trixy trying to kill her, only to be disrupted by a group of strange little creatures.

One of which makes the mark on the back of her neck burn.

Curious, she helps them out to murder her family, and then she follows them along on their adventures, discovering both her mates in the crazy ass world of Hell.