In The Hand of the Goddess - Tamora Pierce, Harper Collins

Alanna must protect her best friend, the prince, from an evil sorcerer in this second book in Tamora Pierce's Margaret A. Edwards Award-winning young adult series--now with a new look! Still disguised as a boy, Alanna becomes a squire to none other than the heir to the throne. Prince Jonathan is not only Alanna's liege lord, but also her best friend--and one of the few who know the secret of her identity. When a vicious sorcerer threatens the prince's life, it will take all of Alanna's skill, strength, and magical power to protect him...even at the risk of surrendering her dreams.