Shadow on the Sea — S.J. Garrett

The world of Ceres has been ruled for millennia by the winged race known as Lightlings. When the Chalice Kingdom celebrates the birth of the next crown princess, they have no idea just what events have been set into motion. The beautiful angel has a special, shadowy, gift, and only by learning to control it will she be able to claim the lover rightfully hers by destiny, and save her world from an evil bent on consuming them all.