Fallen From Ashes by Megan Linski
(The Kingdom Saga #2)
Queen Bennua has grown into a powerful ruler. With her new laws encouraging rights for both men and women, Haya-Maa has grown from a small city into a prosperous nation. Engaged to Zahid, the handsome Raider Prince, it would seem the young Queen is ready to lead the desert of Sahrahn into paradise.
But not all are so eager to follow the new Queen. A short time into her rule Haya-Maa erupts into civil war, rebels opposing the idea of a woman in power. With no other option Bennua must embark on a quest to find her missing friend, Toshana, who could hold the key to ending the bloodshed. Yet as her journey wears on Bennua discovers her title as Queen powerless against the wrath of gods and the wars of men. At her breaking point, Bennua finds the only way to save her country and defend her people...is to offer a devastating sacrifice.