Serafinowicz was born in Jonava, Lithuania on 23 February 1915 in a Polish family and raised as a Polish patriot. She studied painting at the Fine Arts Faculty of the Stefan Batory University in Vilnius (1937–1939). After World War II, she was repatriated to Poland. She continued her studies at the Nicolaus Copernicus University in Toruń (1945–1948), and earned her diploma in painting (1951). In 1954 she passed her extramural acting examination in puppetry. In 1961, she qualified as a puppet theater director.