Well, apart from all the artists she slept with and hanged out with who would've advised...there's this:

"She became close friends with avant-garde writers, including Romaine Brooks, Djuna Barns, and Natalie Barney, and artists, notably Marcel Duchamp who became her lifelong friend and mentor, as she was to say later, "He taught me everything that I know about modern art."

And this: She began working with art historian Herbert Read.

And this too:

"She was aided in her quest by a number of friends who advised her, including Howard Putzel, an art dealer, and Madame van Doesburg"

Odd to speculate? Even odder to throw out a challenge that's well documented.

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