The Forty-Year-Old Virgin Witch by Raven Storm

Aggie is a witch in hiding from her coven and the magickal world at large, after her virginity contract was sold at birth to an incubus; a demon who would surely kill her during the inheritance ceremony. Now turning forty, her magick is tired of being contained, and attracts the attention of a few nearby supernaturals, all vying for her attention: Karl, a grumpy, self-effacing vampire who fusses like a mother hen, Luka, a rowdy werewolf with golden retriever energy, and Quinn: a player warlock with a pet hawk. If they can sense her, then surely her jilted betrothed can as well. And they aren't about to let Aggie go without a fight.