Laura J. Burns & Melinda Metz 
Sacrifice [EPUB ebook] 

Gabriel and Shay are convinced that they can make their relationship work. Knowing that Shay is half-vampire, Gabriel thinks that his coven will embrace her as one of their own, but instead they view her as an abomination, a thing that doesnt belong in either world. And they want her dead. Now Gabriel must make the ultimate decision — watch his love be killed by his coven or defy the people closest to him, the people he has spent centuries with to save her.