Ember Queen - (Ash Princess) by Laura Sebastian

With Astrea under the rule of a new leader, Theo returns to fight for her land and her people.

But her enemies are more powerful than ever before and, if she is to win once and for all, she must risk everything and everyone if she is to reclaim her throne-- Book Synopsis The thrilling conclusion to the New York Times bestselling series made for fans of Victoria Aveyard and Sabaa Tahir (Bustle), Ember Queen is an epic fantasy about a throne cruelly stolen and a girl who must fight to take it back for her people.

Princess Theodosia was a prisoner in her own country for a decade.

Renamed the Ash Princess, she endured relentless abuse and ridicule from the Kaiser and his court.

But though she wore a crown of ashes, there is fire in Theo's blood.