Chosen by Grace (Divine Fate Trilogy Book 1)

Details: 

Ryn Tyler didn't plan to kill a demon when she moved to Eagle Valley - or to become the hero of a divine race of angels. She just wants to be a normal teenager, but fate has other plans. As she prepares to attend Galen High, a magical school for angels, Ryn navigates a complicated relationship with Marek, the guy who can't stop saving her life. But Marek knows more about Ryn's magic than he's letting on.