Deidre of the Twilight Forest

Vampires, man-made weapons from a final world war, now rule. Deidre Manfred, a young girl training deep within a continent-wide area known as The Twilight Forest. Werewolf hunter by trade, she is summoned to a heathen dead city by the emperor of vampires. The city is tied to her past, and knowledge of what she is could threaten the future...