The First Book of Demons — Raquel Dove

Alexandra is a normal teenage girl just trying to make it through her relatively miserable high school life. Her aunt has done her best to raise her since her parents died, and her best friend Sam is a blessing in her somewhat bleak life, even though every other member of the opposite sex seems to leave her tongue tied and flustered. But her life takes a shift for the worst just before her eighteenth birthday, kicked off by a nightmare that has more meaning than she's ready to accept. When she is suddenly thrust into a world of demons, held captive by the handsome and dangerous prince Balthazar, she has no choice but to strike a bargain with him. She helps him unleash the power that he needs to hold his newly acquired kingdom together, and in return he agrees to send her home. But when unwanted feelings of attraction begin to arise, the demon prince finds it a bit too hard to let her go so easily. And Alexandra isn't quite sure she's ready for him to let her go.