As a child she suffered greatly from her mother's frequent absences, and her parents' inharmonious marriage. The couple separated in 1924 and divorced in 1948. Her mother went to Brussels with the four children, where
Princess Clementine of Belgium offered refuge. In 1921, Archduchess Elisabeth had begun a relationship with the Austrian socialist member of parliament Leopold Petznek, whom she eventually married in 1948. Stéphanie got along well with her stepfather. Her relationship with her mother was not very good, and worsened after her second marriage. Archduchess Elisabeth did not like Karl-Axel Björklund, and forbade him entry to her house. Stéphanie provided financial support to her father Otto Weriand in later life. Stéphanie had three elder brothers: • Prince Franz Joseph zu Windisch-Grätz (1904–1981) • Prince Ernst zu Windisch-Grätz (1905–1952) • Prince Rudolf zu Windisch-Grätz (1907–1939) ==First marriage==