Master's Bride: Blood Brood Book 2 (Vampire Romance‪)‬

Stella hated the vampires, hunted them after they took away a dear friend. After finally getting her revenge, she meets her match in the vampire master Schneider. He chooses to torture her by turning her into the creature she'd been hunting.
As time goes on and her vampirization progresses, several events brings her to wonder who exactly is the bad guy, the vampires, or the hunters?