In 1947, she returned to the U.S. and on January 3, 1948, she married a Polish Jew, Szymon Dawidowicz. Upon her return to the U.S. she worked as a researcher for the novelist John Hersey's book The Wall, a dramatization of the 1943 Warsaw Ghetto Uprising. From 1948 until 1960, Dawidowicz worked as a historical researcher for the American Jewish Committee.