Faeling by S. E. Wendel

Nothing tastes sweeter than revenge…
Ravenna never asked for her gifts, and certainly not for her parents to sacrifice themselves protecting her. As a half-fae with foresight, she has more power than most realize, even her well-meaning but doomed parents. She isn’t some damsel in distress—and she isn’t prey for the evil Fae Queen Amaranthe.
No matter how long it takes, no matter what it demands of her, she will avenge her parents. With only her innate gift, a seething rage, and her father’s begrudging unicorn, Ravenna means to burn the faelands to the ground.

Plan for enemies without, watch for enemies within…
Vallek Far-Sight, chieftain of Balmirra, chief of chiefs, means to make safe the orcish territories and unite the clans—and he doesn’t care how many thick green heads he has to knock together to do it. He can see what others can’t: the world grows more dangerous every day, enemies closing in on every border. Protecting his kin might’ve been impossible if not for his most treasured secret—something none of his enemies could even dream: a sorceress who sees the future.
Hidden within the ranks of the Balmirra court, Ravenna plots to march at the head of the orcish army to take Amaranthe’s. She just has to keep her wits about her and her heart safe from a certain noble chieftain, one who treats her like his queen.