When I was living in Rochester, NY I saw Marian live many times. She would come to Rochester often, and one reason was to visit with her good friend Alec Wilder who lived in Rochester part of the year.
Also saw her in Toronto at least once while I was there visiting my good friend John Norris.
I agree with Larry that her playing seemed better over time. Her earliest recordings on Savoy were much less interesting to me than her sessions on Concord.