Spellcaster series (Claudia Gray)

"Descended from witches, high school senior Nadia can tell as soon as her family moves to Captive's Sound that the town is under a dark and powerful spell. Then she meets Mateo, the teenage local whose cursed dreams predict the future, and they must work together to prevent an impending disaster that threatens the entire town"--

"Teenage witch Nadia must defeat the evil sorceress Elizabeth before Elizabeth gathers enough power to summon the One Beneath and destroy everything Nadia has worked to protect"-- Provided by publisher.