>> I wonder if she wears those glasses for gravitas?
Want my guess? She wears them because she needs vision correction to see well, and wearing contact lenses requires a lot of fussing around with, which is a drag if you’re busy. Also, contact lenses and outdoor activities don’t always mix (dust, spray, temperature extremes, etc.)
I have some experience with this issue. I had contacts when I was younger, and gave them up for just those reasons.