In 1943, Erzsi arrived in Budapest with forged documents. Yitzhak Herbst (Mimish) helped her integrate the movement and its underground activities. Following the German occupation of Hungary on 19.3.1944, Erzsi acted as a liaison officer for the members in the underground, supplying them with documents and instructions. For a certain period of time, Erzsi and two other young women kept safe six suitcases containing equipment for the underground laboratory which produced forged documents. Upon liberation in 1945, Erzsi returned to Bratislava where she attended medical school.
Erzsi lives probably in Slovakia.