The queen of nothing
(Book)

Jennings, Kathleen.

"As the exiled Queen of Faerie, Jude must travel back to Elfhame to help her twin sister, Taryn, and uncover how to break a dark curse threatening the whole Faerie world"--,Provided by publisher.

He will be the destruction of the crown and the ruination of the throne. Power is much easier to acquire than it is to hold on to. Jude learned this lesson when she released her control over the wicked king, Cardan, in exchange for immeasurable power. Now, as the exiled mortal Queen of Faerie, Jude is left reeling from Cardan's betrayal. She bides her time, determined to reclaim everything he took from her. Opportunity arrives in the form of her deceptive twin sister, Taryn, whose moral life is in peril. Jude must risk venturing back into the treacherous Faerie Court, and confront her lingering feelings for Cardan, if she wishes to save her sister. But Elfhame is not as she left it. War is brewing. As Jude slips deep within enemy lines, she becomes ensnared in the conflict's bloody politics. And when a terrible curse is unleashed, panic spreads throughout the land, forcing her to choose between her ambition and her humanity... --,From dust jacket.