Bound to the Shadow Queen (Frostbound Court) by Robin D. Mahle

She left to protect him. He’ll tear apart the realm to bring her back. Everly Elarion has been stolen into the heart of the Unseelie Wilds, where whispers of her true bloodline promise both power and ruin. If only they didn’t come at the expense of the uncle who had her taken and tortured once before. Draven Ashwynter knows exactly what his wife is: a liar and a traitor, yet somehow still his fate-chosen bride. As his kingdom fractures and ancient monsters rise, the Frostgrave King hunts her through the chaotic mana that is meant to repel his people. He’s certain she’s the key to his own ruin and Winter’s salvation. But the closer they draw, the more their bond burns hot enough to melt every oath and law. When their paths finally collide, the question is no longer who will save the realm. It’s which of them will let it burn to save the other. The sweeping enemies-to-lovers romantasy series continues with Book Two of the Frostbound Court Trilogy.