The daughter of John R. and Alice (Wallhermfechtel) Carpentier, she was born Dec. 21, 1930, in Webster Groves. She entered the Ursuline community on July 15, 1948, and professed her vows on Jan. 16, 1951. She earned a bachelor’s degree in mathematics from the College of New Rochelle and master’s and doctoral degrees in mathematics from the University of Notre Dame.

Also known as Mother Adrian, Sister Betty taught at Corpus Christi High School in Jennings from 1957-64.

She spent many years in Springfield, Illinois, teaching at St. Aloysius School from 1954-57 and at Springfield College from 1967-68 and 1981-88, when she was also registrar. She taught at St. Teresa High School in Decatur, Illinois, from 1978-81.

Sister Betty was principal of Ursuline Academy in San Antonio from 1975-78 and served as an office assistant at the Ursuline Generalate in Rome, Italy, from 1988-96. She also was a trained massage therapist and practiced in Alton, Illinois, from 2005-14.

Sister Betty was known for her brilliant mind and her passion about justice issues. She was active in many social justice groups.

Burial was at St. Peter Cemetery.