Stainless Steel Vampire (Skye Donovan Book 1)

Urban fantasy short story. When a vampire-like spirit possesses the sorting machine Postal worker and witch Skye Donovan is working on, she knows she must get rid of it before it sucks all the life energy out of her and her partner. But how to eject it without tipping off the entire workroom floor and exposing her witchy calling to her supervisors?