The Glass Sword. New World Magic, #5

A unicorn walks into a bar.it's cheaper than therapy. Therapy, you say? Sign up Marly, the angry ex-Unseelie-fae-queen. Or how about Sasha, the bitter exiled-Unseelie-fae-king? And definitely Ruby, the mortal bartender who lost her heart when she found her memories of March, the unicorn shifter she loved. A good therapist would say learn to live with the consequences of choices, but Ruby isn't ready to accept that a choice she didn't even know she made landed March as the prisoner of the Seelie fae court.
And Marly and Sasha have some feelings about reclaiming the throne of the Unseelie court. But consequences beget consequences. Amid dying kingdoms and the dying embers of old loves and older hatreds, friends become betrayers, lovers keep secrets, and someone or something is out for blood red revenge.