Daughter of Light (Daughters of Myth Book 2) -Eileen Dreyer

He's had enough.
Harry Wyatt, Earl of Hartley has enough problems trying to keep his estate solvent. What he does not need is yet another lost child showing up on his land looking for the Hartley Fairy Diamond made famous by a recent film. A fairy diamond that is no more than myth handed down by delusional ancestors and responsible for the perilous state of his finances. And yet there is something about this latest visitor, something beside her delicate beauty and troubling familiarity. Something that is compelling him to go against everything he believes to help her. To want her.

She's on a quest.
Sorcha, daughter of Mab Queen of Fairies is on a quest. Dropped into a cold, alien world, it is her task to recover the great fairy stone that has been lost to the land of mortals, a stone whose absence has upended the balance of nature. If she doesn't get the stone back, spring will not come. But there is a handsome mortal standing in her way. A mortal she is drawn to like no other man, fairy or mortal. A mortal who claims he doesn't believe in her, but whose memories and fears say otherwise. A mortal with green fairy eyes. A mortal she could love, if only he weren't mortal and she fairy.

Note: This title was previously published as Dark Seduction