Touch of Gypsy Fire by Shiloh Walker

The half-breed daughter of an elvish prince and a gypsy lady-she'd heard it said that a match between an angel and an incubus was better suited-Tyriel fought evil as a hired sword. Though she traveled her world, and lived each day with all the passion of the gypsies, it was a lonely existence. She had grown used to hiding that loneliness behind laughter and magick. Until Aryn… The powerful, sinfully seductive swordsman catches her eye, her heart, and her soul. Though something inside of him is drawn to Tyriel, he isn't in love with her. When a deadly evil from their past comes stalking Tyriel, Aryn must look deep inside himself to find the truth. The problem will be finding the answer in time. Because Tyriel's time is running out.