Eagle's Beak and Wings of Bronze, or Something Unusual Happens to Allis — Deborah J. Ross

When sweet, slow-witted Alis gets shipped off to be the bride of the Duke's son, she isn't quite sure what to make of her situation, especially the changes that happen to her during the full moon. Soon she's holding her own in conversation with a sonnet-composing dragon and a contentious two-headed roc. Is she cursed to become a were-griffin or is the world finally making sense?