Daryn's Slayer

A slayer and a vampire pair up and turn the supernatural world inside out. Daryn falls instantly in love with Ernestine the moment he meets her, despite her calling as a slayer. She inspires true feelings he'd thought lost to him after centuries on the run from a cruel and vindictive coven leader, Cassandra. Ernestine, a werewolf without the ability to shift, can't deny the desire he inspires, even though her life's work, her every breath, focused on ridding the world of the evil vampires.
Together, their powers change into something new, and their mating becomes a beacon to all the supernatural beings in the area. Can the fight their way out, or is their union doomed from the start?