Around 1925 she became a member of the Bahá'í Faith after having learned of the Faith at the 17th World Congress in 1925 in Geneva where she met Martha Root who was already well known among the Esperantists. Dr. Adelbert Muhlschlegel gave a short talk in Esperanto in which he explained Bahá'u'lláh's teachings and cited 'Abdu'l-Bahá's praises of Esperanto and of Dr Zamenhof. In late 1937 she went to the United States to teach that religion as well as Esperanto. In December 1938 she had to leave the United States as that country's Immigration Service declined to extend her visa for the illegal "paid labor" of teaching Esperanto. She returned to Poland, where she continued to teach and translate many Bahá'í writings.

Under the German occupation regime of 1939, her home in Warsaw became part of the Warsaw Ghetto. She was arrested under the charge of having gone to the United States to spread anti-Nazi propaganda, but after a few months, she was released and returned to her home city where she and the rest of her family remained confined. There she endeavoured to help others get medicine and food. She was offered help and escape several times by Polish Esperantists but refused in each case. To one Pole, well-known Esperantist Jozef Arszennik, who had offered her refuge on several occasions, she explained, "you and your family could lose your lives, because whoever hides a Jew perishes along with the Jew who is discovered." To another, her explanation was contained in her last known letter: "Do not think of putting yourself in danger; I know that I must die but I feel it is my duty to stay with my people. God grant that out of our sufferings a better world may emerge. I believe in God. I am a Bahá'í and will die a Bahá'í. Everything is in His hands." [JewAge]