She was a writer in Jewish anarchist circles in the United States who took part in the six-day joint conference of anarchists and socialists in New York in 1889. The conference was to work out a plan to create a joint Yiddish anarchist-socialist newspaper, but the meeting blew up because of quarreling. The anarchist delegates decided at the time to publish Fraye arbeter shtime (Free voice of labor), and it commenced publication in 1890. Together with R. Louis, Dr. Hillel Zolotarov, M. Gidzhedanskin, and Sh. Yanovski, Preger was among the spokespersons for the anarchist delegation. Further details of her biography are unknown.
Sources: B. Vaynshteyn, Fertsig yor in der idisher arbeter bavegung in amerike (Forty years in the Jewish labor movement in America) (New York, 1924); Elye (Elias) Shulman, Geshikhte fun der yidisher literatur in amerike (History of Yiddish literature in America) (New York, 1943), pp. 51-53.