Soul Mage. Huntress vs Huntsman, #4

A stoic warrior-maiden and a villainous priest-king make the most unlikely alliance in the history of the five kingdoms. When a rescue attempt to save a clutch of dragon eggs from the soul mages goes terribly wrong, Warrior-Priestess Verdria of High Rock finds herself on the wrong side of a portal, deep in enemy territory. She soon learns she's in the heart of the soul mage's empire and when Honryn, the future priest-king of the mages, takes a liking to Verdria and saves her life, she's pretty sure she's facing down a 'fate worse than death' scenario.
Just when she thinks things can't get any worse, Priest-King Honryn introduces her to the Royal Court of the Soul Mages, the most morally corrupt and bloodthirsty court in existence. Life is cheap. Souls are currency. And Verdria has caught the fancy of the young priest-king, and while he doesn't want to steal her soul, he's set on winning her heart. And she's equally set on having his heart, after she's carved it out of his chest.
But when she discovers Honryn's most monstrous secret, a secret he's even hiding from his fellow soul mages, she's moved to pity and offers to aid him.