Following years on the Catskills summer circuit and radio, Hahn made her professional acting debut portraying one of the children in As the Girls Go for the 1948-50 run at the Winter Garden Theater.
Hahn's most prominent role was that of Dixie in the original Broadway production of Cat on a Hot Tin Roof (1955)[6] at the Morosco Theater.
Hahn played the title role in the Kermit Bloom Garden Broadway T&B Semi-national tour production of The Diary of Anne Frank (1958).
Hahn also appeared in four Yiddish language productions including Dos Leib iz a Cholem (Life is a Dream) 1945, Vell'n Zei Gedenken?
In 1995, Hahn had the title role in Sacajawea, a multi-media production about the native American woman who helped with the Lewis and Clark Expedition, when it had its world premiere in India.