Of fire and stars volume 2
Balzer + Bray, an imprint of HarperCollinsPublishers
"Princesses Denna and Mare are in love and together at last--only to face a new set of dangers. Mare just wants to settle down with the girl she loves, which would be easier if Denna weren't gifted with forbidden and volatile fire magic. Denna must learn to control her powers, which means traveling in secret to the kingdom of Zumorda, where she can seek training without fear of persecution. Determined to help, Mare has agreed to serve as an ambassador...