The Erlking's Daughters. The Karneesia Chronicles, #1

The Unseelie Caverns are closing in on Morwë. The handsome prisoner may be her only way out. The Unseelie faefolk dwell in darkness, consume human life force, and care for no one. except for the half-human daughters of the Erlking. Morwë encases her feelings in walls of ice, only allowing herself to care for her younger sister-and even then, not openly. She navigates hostility from family and acquaintances alike and believes there is no other way to live.
But her world is shaken with the abrupt arrival of a prisoner who sees her-in more ways than one. Arken has always placed family first. When his village is attacked and his younger brother stolen, he sets off determined to rescue him. An encounter with faefolk out of stories and spook-tales wasn't in his plan, and neither is the woman with haunting eyes just as trapped as he is. She's his enemy. He shouldn't trust her.
But she may be his only hope for salvation. As a forced marriage looms and violence mounts in the caverns, Morwë must choose-acquiesce to the bleak, terrifying future she thought was her only option, or risk everything to escape with the human prisoner and protect their siblings-even if it costs her life. A dark fantasy with slow burn romance, The Erlking's Daughters is perfect for fans of Hannah Whitten's For the Wolf, Robin McKinley, Kate Stradling, and anyone who loves to see characters move from darkness to light.