In 1928, she graduated from
University of Lviv. In 1923, she participated in the first meeting of the Russian Student Christian Movement in Czechia. From 1926 to 1928 she was an active member of this movement and its leader for Poland and Belarus. She acted as editor of the religious political journal
At the Borderline. She participated in apologetic summer courses in Paris founded by Archpriest
Sergei Bulgakov, her spiritual father. From 1932 to 1934, she was an assistant at the Astronomical Observatory of the
University of Warsaw. In 1936, she married Leon Kazimierczak, an
ichthyologist at Warsaw University, and in May 1937, their son Sergei (named after Sergei Bulgakov) was born. During World War II, she worked as senior scientist at the Department of Astronomy in Lviv and moved to Warsaw in 1944. During the
Warsaw Uprising in 1944, she became separated from her husband who was brought to a camp near Vienna as war prisoner. In 1945, she made a very bold and crucial decision for her later life: As an Orthodox, she decided to return to Russia, although the Soviet Union was totalitarian at that time. She first lived in
Kherson (in today's Ukraine) where her son died of meningitis in July 1948. From 1945, she taught mathematics and astronomy at the
Kherson State University. In 1948, she became a researcher, then a senior researcher at the Institute of Theoretical Astronomy of the
Academy of Sciences of the Soviet Union. In the 1980s, she took religious vows and became a nun choosing the path of "monasticism in the world". She worked on the biblical studies and the history of the Russian Church, writing original works and translations. She was fluent in Polish, French and German. In her last years, she almost completely lost her eyesight but, having an excellent memory, she gave a series of lectures on the life and work of Archpriest Sergey Bulgakov. She died on 30 August 1992. She was buried in the cemetery of astronomers at the
Pulkovo Observatory. == Awards and honors ==