Tidemagic: Ista Flit and the Impossible Key

In book two of this middle-grade fantasy trilogy, Ista Flit -- a daring heroine with the magical ability to look like anyone she's ever seen -- must help her father escape from an enchanted trap. In her first adventure, Ista Flit and her friends saved the town of Shelwich from a monstrous foe—but her father is still missing. She has a new clue though: a key, engraved with mysterious symbols, and a note saying "any door with a keyhole will do." This key transports Ista, Nat, and Ruby to Glass Isl