Huh -- you just made me realize the extent to which the monsters in the series are masculine. Trollocs and Myrddraal are described in terms that either come across as masculine or at least not-feminine; then there are Darkhounds, Gray Men, gholam, etc, none of them with female markers. Feminine evil is all human (Black Ajah, the lady Forasken, some Darkfriends), and aside from the Black Ajah it's all outnumbered by male counterparts.

Under the circumstances, I'll count that as a good thing, given fantasy's general problems with the the monstrous feminine (http://www.sfnovelists.com/2010/06/16/the-monstrous-feminine/).