She was assistant,[2] protégé, domestic partner,[3] editor, and biographer for noted harpsichordist Wanda Landowska.
[1] She studied piano, harmony, counterpoint, musicology, voice and organ with expert teachers, and harpsichord, along with keyboard repertoire of the 15th and 18th centuries, with Wanda Landowska, beginning in 1933.
Landowska, a naturalized French citizen of Polish-Jewish descent, and Restout escaped Saint-Leu-la-Forêt, France, during the Nazi advance in 1940,[9] and arrived in the United States on 7 December 1941 at Ellis Island, the day Pearl Harbor was attacked.
[10] When Landowska died on 16 August 1959, Restout inherited her estate including her papers and collection of musical instruments.
Three years later, in 1964, she published, with the assistance of Robert Hawkins of The Hotchkiss School, Landowska on Music, a collection of Landowska's writings on music, which included material from Musique ancienne which Restout translated into English from the original French, and many of the master-class notes that Restout had saved during their flight from France.