The Depths of Darkness — Laurie Bowler

Patty wakes to find she is a Silver Vein vampire; and still remains in the status of the high witch of a magical and powerful realm that is full of evil and danger. With the realm now in jeopardy against an unknown threat, Patty must figure who is behind the mystery and their intentions. Opening up the academy for young witches the fates of those behind the walls lies in the hands of Patty.
With the aid of Luke and vampire friends; Patty discovers the secret of the elder's realm and the ancient prophecies that have dictated the laws for centuries and passed through every ancestor. Will Patty be in time before the realm is destroyed and her beloved magical world no longer exists?