Storm Over Archaelaos — Meyari McFarland

Archaelaos: Distant island where men ruled, against all the laws of nature. When Anwyn's friend Iola got a letter to come home, Anwyn decided to go with her. A quick trip to a strange land might also get the Dana a new trade deal. What could go wrong? But the trip revealed plots against the Dana that Anwyn could never have anticipated. If she wasn't careful, Anwyn could doom everyone she loved.