Crown of Shadow and Light (Tenebrea Unbound: A Series Set in the World of the Angels and Fae of Tenebrea) by Ellie Bullock

The prophecy was supposed to save them. Instead, it is tearing the world apart. Gabriella survived the Tower. She survived the dungeon. She survived the bond that tied her to the one man capable of destroying kingdoms for her. But survival has never meant freedom. Not in a world where children vanish into the dark, ancient powers stir beneath the earth, and the prophecy everyone worships may be nothing more than another leash. As war closes around Tenebrea, Gabriella makes a reckless choice that drags her back into the horrors buried beneath her stolen memories—a forgotten island where children are hunted for sport, monsters roam the jungle, and the sins of kings were hidden beneath sacred law. But she is not the frightened girl who once ran through those forests counting steps to stay alive. And she is not alone. Sevrin will cross worlds to find her. Alturia carries the Spear of Destiny at last. Tebethia moves through the shadows with plans of her own. And somewhere beneath prophecy, blood, and war, the Ark still waits for the final piece that could save the realms… or destroy them forever. Because some kingdoms are built on sacrifice. And some girls were never meant to survive long enough to burn them down. Read more