She married three times. First to Piotr Olewiński but the marriage was not consummated so it was dissolved and Krystyna returned home. Then, she got married to Mirosław Szabuniewicz but this did not last long. Finally, she met Aleksander Hauke-Nowak, with whom she remained until he died in 1956. As he was already married in the Roman Catholic Church, which did not recognize divorce, they made their relationship official in the Polish Catholic Church.