Soulless

Soulless is by Gail Carriger. This is the first book in the fantasy series called "The Parasol Protectorate." Alexia Tarabotti is a preternatural, she is soulless. When she comes in contact with a supernatural (vampire, werewolf, etc) she counteracts their supernatural powers and renders them human as long as she is touching them. When she is attacked by a vampire at a ball and has to to kill him; she is forced to deal with Lord Maccon (a Scottish werewolf Alpha) who cleans up these kinds of messes for Queen Victoria. When vampires and werewolves begin to disappear, Alexia and Lord Maccon must discover what is happening, if they can keep their hands off each other long enough. A charming and well written novel, can't wait to read the rest of the series. 

Ratings: 11th grade - 9 out of 10 - AC (some mature thematic content).