Showing Blood Drive by Jeanne C. Stein

Anna Strong was a tough-as-nails bounty hunter, until the night she was attacked-and changed forever. Now a vampire, Anna discovers that her long-dead brother may have had a daughter - and the girl's in serious trouble. There are some very dangerous people after her, but they're about to learn that to a bounty hunter with an unnatural thirst for blood, even the deadliest human predators are easy prey.