Lord of the Changing Winds (Griffin Mage Trilogy)

Griffins lounged all around them, inscrutable as cats, brazen as summer. They turned their heads to look at Kes out of fierce, inhuman eyes. Their feathers, ruffled by the wind that came down the mountain, looked like they had been poured out of light; their lion haunches like they had been fashioned out of gold. A white griffin, close at hand, looked like it had been made of alabaster and white marble and then lit from within by white fire. Its eyes were the pitiless blue-white of the desert sky.

Little ever happens in the quiet villages of peaceful Feierabiand. The course of Kes' life seems set: she'll grow up to be an herb-woman and healer for the village of Minas Ford, never quite fitting in but always more or less accepted. And she's content with that path -- or she thinks she is. Until the day the griffins come down from the mountains, bringing with them the fiery wind of their desert and a desperate need for a healer. But what the griffins need is a healer who is not quite human . . . or a healer who can be made into something not quite human.