This was more of a warm up for me then anything else. So here's Eve as a vampire slayer in a modern world sort of set up... Justin came to mind about halfway through this and I was thinking about the set up for a story.

Eve works as a teachers aid while going to the local college as part of her cover, she secretly is part of a vampire hunting group that was sent to this area after the disappearance of one of their members (Justin and his father turned him into their butler) so Eve was sent in to find out what happen to him and take down the vampire responsible. So now you have Eve hunting for Justin without knowing it, Justin knows someone is out hunting vampires, and Patches knows Eve....