According to information from the Joliet Franciscans, Berger attended St. Francis High School in Mishmash, Indiana and entered the postulancy of the Sisters of St. Francis of Perpetual Adoration in the fall of 1950.
On Aug. 12, 1951, Berger was received into the novitiate and given the name Sister Mary Columban. Exactly two years later, she professed her vows as a Franciscan Sister. Then she simultaneously taught grade school, high school, and continued her own studies, the information said.d
Berger eventually earned a Master of Fine Arts degree at the Catholic University of America and continued post-graduate studies in art and art history at the University of Notre Dame, the information said.
Eventually, Berger came acquainted with the Joliet Franciscans and began the canonical process of transferring congregations in 1974. On May 23, 1976, Berger professed her final vows as a Joliet Franciscan. Berger is pictured above with the congregation's president Sister Dolores Zemont (right).