The Wombat File Is Yours to Keep

The author of the No. 2 nonfiction bestseller in 1912 (according to Publishers Weekly), she was also the first woman to graduate from the University of Rome La Sapienza Medical School, and her studies there led her to begin work in a Roman housing project in 1907. She lived in Italy until Mussolini chased her out, and then fled Spain in the wake of the Spanish Civil War. She moved to the Netherlands, where she died in 1952. In 1948, she wrote ""Times have changed, and science has made great progress, and so has our work; but our principles have only been confirmed, and along with them our conviction that mankind can hope for a solution to its problems, among which the most urgent are those of peace and unity..."

Her work fell out of fashion in the U.S. after her early fame, but her reputation and methods were revived in the U.S. in 1960, and remain influential in many circles. An international organization dedicated to her ideas (one of several) is now headquartered in the Netherlands. She has also been pictured on Italian currency, both on coins and paper money.

What is her name -- (which also appeared in the title of her bestseller)?

First correct answer posted to comments wins a Eurobeat remix of the Emerson, Lake and Palmer version of Mussorgsky's Pictures at an Exhibition. No Googling or being so smart that you knew this already without even really having to think about it, because that's just going to take the wind out of my sails and frankly I just can't deal with that today, know what I'm sayin'? Thanks. Anyway, one guess per comment, but comment as often as you like.