Succubus Lost by Daniel Gage
Katie doesn't know what she is. All she knows is her touch drains the life from people. And that she has some sort of mystical charm where she can influence people around her to do her bidding.
She gets by as a performer in Las Vegas, until one day she finds herself staring at the business end of a crossbow. Then, when a dangerous felon comes to her aid, her life will never be the same...
If you enjoyed Succubus Lost, check out The Unholy Trinity - Origins! It contains Succubus Lost, as well as the next five parts of the story!