I always like the idea of Willow being a secret mastermind, but on the surface is still a bubbly bimbo. Being her son's second in command everyone assumes is just eye candy as she spies, lies, and helps her precious son to the top, all the while pushing for him to make his sister's and putting them in the right spot to do it. Make her the one that pushes him over the edge and go for a harem.