Blood Song by Cat Adams

"Bodyguard Celia Graves has definitely accepted her share of weird assignments, both human and supernatural. But her newest job takes the cake. Guarding a Prince from terrorists and religious fundamentalists is hard enough, but it seems like the entire supernatural world is after this guy too. When she is betrayed by those she is employed to help, and everything goes horribly wrong, Celia wakes to find herself transformed.

Neither human nor vampire, Celia has become an Abomination—something that should not exist—and now both human and supernatural alike want her dead. With the help of a few loyal friends—a sexy mage, a powerful werewolf, and a psychic cop—Celia does her best to stay alive. On the run from her enemies, Celia must try to discover who is behind her transformation…before it’s too late." (from Amazon.com)

Paperback Info: ISBN Tor, Barron's Educational Series, June 2010