Her Vampire's Promise - Jordan K. Rose
Reade Hayes knows better than any vampire that nothing good ever comes out of Central City. So he isn’t surprised the beautiful blonde he meets in the dive bar is crazy. What does surprise him is how fast she moves, how hard she hits, and the fact she’s wearing a ring he last saw two decades ago on the hand of his dead friend. Was this the little girl he swore a blood pact to protect? Why had her uncle lied about her death? And what had he done to make her so lethal?