The Court the Fae Forgot by Eden Beck

The only thing more dangerous than the Wildness is the dark fae lord that controls it.
Too bad by the time Aurra learns this, it’s already too late.
Abused, mistreated, and neglected by the human parents who kept her true nature a secret, no one is more surprised than Aurra when the fae show up on her doorstep to sweep her away to a new life.
Shiel, Zev, and Finch—three golden-haired warriors from the Western Court. They swear to protect Aurra at all costs, to carry her to safety where she can learn what it is to be fae.
More than just any fae, however.
They say she’s the true heir to the kingdom, a changeling switched at birth to protect her from the fae lords who would want to control her and the humans who would want to harm her.
They warn her of the sweeping Wildness, the vast fae forests ruled by a lord perverted by a glamour so powerful that no one dares contend with him.
Icarus—Lord of the Wildness. The Dark Fae of the Forest.
There’s a problem with their warning, however.
That dark fae lord, that winged creature of terrible beauty, already knows Aurra … intimately.
Only one thing is certain in Aurra’s new world. No one is to be trusted, not even herself.