Sapphire Flute — Karen E. Hoover

It has been 3,000 years since a white mage has been seen upon Rasann.

In the midst of a volcanic eruption miles outside of her village, Ember discovers she can see magic and change the appearance of things at will. Against her mother's wishes, she leaves for the mage trials only to be kidnapped before arriving. In trying to escape, she discovers she has inherited her father's secret - a secret that places her in direct conflict with her father's greatest enemy.

At the same time, Kayla is given guardianship of the sapphire flute and told not to play it. The evil mage C'Tan has been searching for it for decades and the sound alone is enough to call her. For the flute to be truly safe, Kayla must find its birthplace in the mountains high above Javak. The girls' paths are set on a collision course...a course that C'Tan is determined to prevent at all costs.