One correction: she didn't design the Tower of the Four Winds; that was done by fellow Imagineer, Rolly Crump. Likewise, while Blair deserves the most credit for designing "it's a small world," many others including Crump, Marc Davis, Alice Davis, and Blaine Gibson, were instrumental in creating the attraction.
Personally, I think this woman is both a genius and a pioneer. She seems to be one of the only female artists that Walt trusted. For that time, I think she broke bariers