Especially since we already know there are Darkfriend Aiel - it just makes sense that the Aiel aristocracy, including "women (Egwene) liked and worked with" have been subverted by the Shadow.

I thought this was a lesson that all the characters needed to learn, but it seems that only Egwene and Elayne have learned it so far - the mental balance to learn that someone has betrayed everything you live and hope for without letting it destroy or unbalance you.