Descent of Shadows - Ryanne Glenn

At the heart of her family's war against the wraith king, Anna makes the only decision she can--to fight back.

Humans have always called the land of Istamba home, yet Roland, King of the Wraiths, is intent on claiming it for himself. When Fort Lieay is attacked, thirteen-year-old Anna Lieay is the only survivor. Distraught from the death of her parents, she makes the dangerous journey to the Sanctuary, the last free human settlement. There, she vows to join the army, despite her age, to help save her home from the wraiths and restore peace to humanity.