A Flicker in the Clarity
HarperCollins, publication date Spring 2017

From Publishers Weekly:

Alexandra Cooper at HarperCollins has bought A Flicker in the Clarity, and a second untitled YA novel from Amy McNamara. The novel tells the story of Evie Ramsey, who learns that loving your best friend might not be enough to save her, and that sometimes in order to become your true self you need to strike out on your own. Publication is scheduled for spring 2017; Sara Crowe at Harvey Klinger negotiated the deal for world English rights.