The Spirit's Demon.

When strange magical occurrences start happening to seventeen year old, Grace Hemmingway, she convinces herself that she's crazy, that the monsters and prophecy of her impending death are just figments of her imagination. Creations formed by a sleep deprived mind, but as time goes by the visions get worse and the logical explanations seem harder to come by. With only two weeks until her eighteenth birthday --the day of her prophesized death, Grace is forced put her faith in the hands of the handsome stranger who knows more about her life than she does --but can she learn to trust him before it's too late?

ORIGINAL STORY GOES TO JAY_DEE_NOVELS!!!!!!