Felician Sister Mary Dionette (Theophilla) Werner, 90, died May 15 in Our Lady of the Angels Convent.

Born in Poland, she moved to Chicago and attended Good Counsel High School. She entered the Felician Sisters postulancy in 1949 and professed her final vows in 1957. 

She ministered as an elementary school teacher in various schools in Illinois and also served as a librarian at Providence High School in New Lenox. She ministered in the Congregation for Consecrated Life and Societies of Apostolic Life in Rome for 20 years, and served in the Office of the Metropolitan Tribunal for the Archdiocese of Chicago.

In the Archdiocese of Chicago, she ministered at Holy Innocents (1949-1955), St. John of God (1955-1957), St. Helen (1960-1965), St. Wenceslaus (1965-1971), and the Office of Metropolitan Tribunal (2000-2014).