Born in Germany, Jung dedicated her life to Jewish communal programs for the poor, needy, and persecuted, both in Europe and the United States.
Describing their first meeting, Leo wrote in his memoirs that "I saw her, a Kitzur Shulchan Aruch in her hand, lecturing to her charges.
[3] Irma and Leo had four daughters together: Erna Villa, Rosalie Rosenfeld, Julie Etra, and Marcella (Micki) Rosen.
Upon emigrating to New York City, Jung was the rebbetzin at the Jewish Center on Manhattan's Upper West Side.
For many years she and her husband were actively involved in the Rabbonim Aid Society, working to help the widows, Holocaust victims, and the impoverished.