Blackwater Valley Exorcism (2006)

Emotionally disturbed Isabelle is locked in a fierce battle with a vicious demon that's hell-bent on owning her soul. Desperate to bring her back from the tangle of evil, her family calls on Jacob, the troubled local priest, to perform an exorcism. In a race against time and terror, he must wrestle his own dark demons before he can save Isabelle. But she isn't the only one who needs saving...