The Sun, the Moon, and a Prophecy

Sylvia Ryan is a teenage girl with a big secret. She has magical powers, and she isn't from this world. Sylvia grew up in a secret community, and had to flee for mysterious reasons. Now, when she is just starting to adjust to her new life, her past comes and drags her back to her birthplace. On top of it all, Sylvia must unscramble a prophecy that effected her past, before she loses everyone she loves.