The traitor's daughter (#1) : Veiled Isles trilogy
(Book)

On the Veiled Isles, ominous signs are apparent to those with the talent to read them. The polarity of magic is wavering at its source, heralding a vast upheaval poised to alter the very balance of nature. Jianna Belandor, the beautiful, privileged daughter of a powerful Faerlonnish overlord, has only one concern: the journey to meet her prospective husband. But revolution is stirring as her own conquered people rise up against their oppressors, and Jianna is kidnapped and held captive at a rebel stronghold, insurance against what are perceived as her father's crimes.