Her teachers included Stephan Krehl, Enrico Mezzetti, Emil Paul, and Robert Teichmuller.
[5][1] Saint Georges taught piano and worked as an accompanist in Botoșani, Iași and Bucharest, collaborating with Vasile Filip, Lisette Georgescu, Carlotta Leria, Nicolae Olmazu, Dimitrie Onofrei, and Constantin Stroescu.
She composed 21 songs between 1908 and 1960, setting texts by German and Romanian poets such as Joseph Eichendorff, Mihai Eminescu, Octavian Goga, and Eduard Moricke to music.
Her social circle included Luca Caragiale, Mariana Dumitrescu, Enescu, Mihail Jora, Oskar Kokoschka, and Alice Soare.
In 1929 and 1930, she won first place in the Enescu Prize competition; in 1943, she received honorable mention.