Onyx Moon (Onyx Moon Trilogy) (Volume 1)

What if you were forced to live a double life while you sleep, and pursued by Demons while you were awake? City girl Ora Gondry has spent all of her nights in a dreamless sleep, until one night she finds herself awake in a foreign realm. Through the help of long forgotten heroes: a legendary swordsman and a former witch, Ora learns her soul teleports to a separate twin body while she slumbers. In Alethia, a land plagued by demonic legions, she must awaken her true power before the world falls to dark forces. While in the city, she struggles to pass exams and keep her best friend from joining a wannabe vampire cult. Oblivious to just how connected these two worlds are, Ora must wager which new friends are true allies, and which are Demons in disguise. But after a crushing betrayal, she is left questioning everything. Armed with only faith and unseen Angels, Ora learns to fight for beliefs and a courageous power she never knew she possessed.