The Guinevere Deception (Camelot Rising Trilogy) by Kiersten White

From #1 New York Times bestselling author Kiersten White comes a new fantasy series reimagining the Arthurian legend, set in the magical world of Camelot . . . . There was nothing in the world as magical and terrifying as a girl. Princess Guinevere has come to Camelot to wed a stranger: the charismatic King Arthur. With magic clawing at the kingdom's borders, the great wizard Merlin conjured a solution--send in Guinevere to be Arthur's wife . . . and his protector from those who want to see the young king's idyllic city fail. The catch? Guinevere's real name--and her true identity--is a secret. She is a changeling, a girl who has given up everything to protect Camelot. To keep Arthur safe, Guinevere must navigate a court in which the old--including Arthur's own family--demand things continue as they have been, and the new--those drawn by the dream of Camelot--fight for a better way to live. And always, in the green hearts of forests and the black depths of lakes, magic lies in wait to