Once a Predator — Zoe Cannon

Formerly a feared vampire hunter, Quinn hung up her stake, married a nice vampire, and moved out to the suburbs. But someone has been killing young women downtown. Someone who sounds a lot like her supposedly-reformed husband. Quinn can feel the adrenaline of the hunt in her veins again... and she likes it.This short story is 4900 words long. It is also available in Lonely Streets, an urban fantasy short story collection.