Complex sentence: In 1926, Wiłucka-Kowalska participated in an unsuccessful Old Catholic Mariavite Church bishops delegation to the Balkans and Middle East where she presented the mission and activities of the Old Catholic Mariavite Church to Eastern Christian Churches.
Split into simpler sentences: In 1926, Wiłucka-Kowalska participated in an Old Catholic Mariavite Church bishops delegation to the Balkans and Middle East. She took part in presenting the mission and activities of the Old Catholic Mariavite Church to Eastern Christian Churches.