Lynn Flewelling: The Oracle's Queen

Under the rule of a usurper king, the realm of Skala has suffered famine, plague, and invasion. But now the time for the rightful hheir has come, a return to the tradition of warrior queens. And the Lightbearer's prophecy is to be upheld at last: so long as a daugther of the royal line defends and rules, Skala will never be subjugated. Now a mystical fire has burned away the male body known as Prince Tobin, revealing Princess Tamir, a girl on the verge of womanhood - and a queen ready to claim her birthright after a life in disugise under the protection of wizards and witches. But will her people, her army - and the friends she was forced to deceive - accept her? Worse, will the crown's rival heir, friend to Tobin, turn foe to Tamir, igniting civil war in a fierce battle for Skala?