And despite that we see no Green-Eyed Female Nature users unless you count Yu’lon whose Jade Magic is as Green as Necromancy or Maiev who at the earliest appeared around the same time the Dark Trolls did and thus is out of the running.
Of course Maiev is a servant of Elune and thus her eyes of Green could easily come from her making Elune the Dreadlord/Venthyr!
So of known candidates we have Yu’lon and Elune…