The Iron Daughter (Iron Fey #2)

Summer faery princess, half human, Meghan is deserted by the Winter prince she thought loved her, becomes a prisoner of the Winter faery queen, and loses her own fey powers. As war looms between Summer and Winter, Meghan knows that the real danger comes from the Iron fey--ironbound faeries that only she and her absent prince have seen. But no one believes her--and trusting a seeming traitor could be deadly.