Yes! I get what you mean by "earthy." Bogdana has a calm energy to it. I think it's a really lovely name and I love when I'm able to use it in BNGs. I'm not sure how usable it is outside of a Slavic country, but all it takes is one person to use it and then it's a hit : )
Bogdana Winifred is SO perfect. Bogdana Millicent is a close second.
A few other ideas that I think might fit in with your style: Bogdana Faustine, Bogdana Vasiliki, or Bogdana Mildred.