Midnight Metamorphosis

A prophecy that a child of both Elemental and Seer races would be born as savior or destroyer of their kind prompts the existence of two factions. One faction wants to kill the child before her sixteenth birthday when she's due to transition into her full powers. The other wants to steal her powers and with those powers help Avadar, a Grand Duke of Hell, rule the Earth.

Avery Anderson, at fifteen, lives with her aunt in southern California following her mother's death. She wants a normal life going to high school and making friends, everything she hasn't done living on the run with her mother for years.

On her first day of school her Elemental powers start to manifest and Avery finds out that her life will be anything but ordinary- this school is filled with Other kids, one of whom is assigned her Guardian, Cole.
Devon, part Mesmer and Elemental and his twin sister Dani have been enrolled at Avery's school by the other faction to become close with Avery. Devon uses his Mesmer talent to become paired with Avery on an assignment. When they realize they can share their powers during a fight against Demonids, the Sentinel of the Elementals, who is also Avery's father, realizes she is a threat to all Elementals and orders Cole to kill Avery before she goes through her transition on her sixteenth birthday.

As her birthday approaches the attacks on Avery intensify and it is only with the help of her friends that she is able beat back evil, but as with any battle there is tragedy.