Dark Sun: A Wicked Lovely Novel. Wicked Lovely Courts, #1

Katherine has spent her life aware that her bloodlines are only half-mortal. When one of the creatures she's been hiding from discovers her in the desert, she expects danger-instead, she feels fascinated by Uri in a way she never dreamed possible. But the appearance of Urian-son of the former Dark King-has brought the Faery Courts into conflict. Aislinn, the Summer Queen, leads the Hunt against Irial's son, and every court is drawn into the complications of family and politics.
Neither family ties nor accidental love can keep the balance between the courts now that the Dark Sun has returned.