Kazimiera Zawistowska was born in 1870 in Rasztowce, Podolia. After education, she moved to Switzerland and Italy. After back to Poland, she married with Stanisław Jastrzębiec-Zawistowski and lived with him in Supranówka in Podolia.
She died on 28 February 1902 in Kraków. The cause of death was probably suicide.