Daughter of Michael and Madeline (Kierian) Casper. She attended St. Mary's Grade School in Breckenridge, Torrence Junior High School in Torrence, CA, and Breckenridge Public High School in Breckenridge. She entered Saint Benedict's Monastery on September 10, 1950, was received into the novitiate as Sister Blanche on June 20, 1951, made first monastic profession on July 11, 1952, and perpetual monastic profession on July 11, 1955. She celebrated her silver jubilee in 1977, golden jubilee in 2002, and her 60th anniversary of profession in 2012. She earned a bachelor's degree in history with a minor in elementary education at the College of Saint Benedict, St. Joseph, and an MRE in religious education at Seattle University in Seattle, WA. She attended Diocesan Teachers' College and St. Catherine's College in St. Paul, MN, St. Cloud State University, St. Cloud, Marquette University in Milwaukee, WI, and Saint John's University School of Theology, Collegeville, MN. In 1997, she attended Creighton University, Omaha, NE, and was certified as a spiritual director. She served as a teacher at Maple Lake, Watkins, St. Peter's School in St. Cloud, teacher and principal at Staples, and religious education coordinator at St. Peter's Parish and in Hutchinson, MN. She worked at Catholic Charities where she ministered to divorced and separated persons and later served as a therapist at Psychotherapeutic Resources, St. Cloud. She was asked to become part of the vocation-formation team at the monastery, and served as director of sisters in first profession and was the coordinator of the vocation-formation team, while continuing to give lectures and workshops. She also served as a personal growth facilitator. Beginning in 2000, she worked in spiritual ministries training and supervising spiritual directors and served as a spiritual director at the Spirituality Center at Saint Benedict's Monastery. She was preceded in death by her parents; brother, Michael (Louisa); and sisters, Margerie (Kapp) Lamvik and Genevieve Betzen. Surviving is her brother-in-law, Don Betzen.