The Ivory Mask — Cassandra Morphy

From a young age, Cary Simms knew that she wasn't like the other boys her age. While she still wasn't sure the hows or whys, she was starting to think that it was more than just that she was a sorcerer. Moreover, that her parents were sorcerers too. When Cary's mysterious aunt shows up unexpectedly for Christmas, she starts to wonder if she was a sorceress herself.Things hadn't changed much when Cary headed back to school, and she was left with the very real possibility that nothing ever would. But when her aunt's Christmas gift, a white mask, works differently in the magical realm, Cary is left wondering why her reflection started making her smile. How going out looking like a girl might just change everything.