Griffin mage trilogy

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...

In Feierabiand, in the wide green Delta, far from the burning heat of the griffin's desert, Mienthe's peaceful life has been shaken. Tan — clever, cynical, and an experienced spy — has brought a deadly secret out of the neighboring country of Linularinum.
Now, as three countries and two species rush toward destruction, Mienthe fears that even her powerful cousin Bertaud may be neither able nor even willing to find a safe path between the secret...