Elfspell - The Elfbitten Trilogy, #3

Taryn Malloy, a Bright Elf, has been seeking a witch who can remove the Hunter's bite on her shoulder. The bite has caused Taryn to experience an uncontrollable lust, demanding satisfaction. Taryn turns to Andre, the vampire, for help finding someone who will work with her. Andre, happy to help Taryn for a chance to taste her sweet magical blood, sends her to the witch, Corbin who has become an untrusting recluse.
Taryn uses her sexual charms to entice Corbin to help her. Now she must seek out the Hunter and break their bond or be his slave for the rest of her life.