The Dreadful Doctor Faust by K. H. Koehler

Louise comes to the big city to create a new life for herself. That life ends when a cruel sadist abducts her, mutilates her body and face, and dumps her remains in the East River. Not quite dead, she floats ashore to the ruins of an abandoned church. There she is found and saved—but what saves her isn’t human. Listed a Top Book of 2010 by Literary Mayhem.