Reign the Earth — A.C. Gaughen

Shalia is a proud daughter of the desert, but after years of devastating war with the adjoining kingdom, her people are desperate for an end to the violence that has claimed so many of their loved ones. Willing to trade her freedom to ensure the safety of her family, Shalia becomes Queen of the Bone Lands, a country where magic is outlawed and the Elementae--those that can control earth, air, fire and water--are traitors, subject to torture ... or worse.

Before she is even crowned, Shalia discovers that she can bend the earth to her will. Trapped between her husband's irrational hatred of the Elementae and a dangerous rebellion led by her own brother, Shalia must harness her power and make an impossible choice: save her family, save the Elementae, or save herself.