Been To Hell

Sinner is an anomaly, she isn't alive but she isn't quite dead either. We would call her a vampire, they just call her a hunter.
After being pulled from the storm trooper program for her ability to fight, she became a glorified security guard. plagued by strange nightmares; All she wants is to go to work and be left alone but does not get her wish when she subsequently catches the not-so-good interest of the most powerful man in the galaxy.
Now she finds herself aboard StarKiller Base protecting the Commander and the General, but a secret lies beneath her surface.
One that she herself has not even discovered herself yet