Sister Cora Marie has been a member of the Institute of the Sisters of Mercy of the Americas since 1956. From 1956 until 1981, she was a teacher on the elementary and high school level and a part-time professor at St. Charles Borromeo Seminary in Philadelphia, Pennsylvania.
Since her move to Virginia in 1981, she has served as a Campus Minister at Virginia State University, the Directress of the Office for Black Catholics for the Diocese of Richmond, the Pastoral Coordinator for St. Elizabeth and Holy Rosary Parishes in Richmond, and the Deputy Director for the Human Rights Council for the State of Virginia. At present, she considers herself a Community Volunteer.
Some of Sister Cora Marie's passionate involvements include the National Black Catholic Sisters Conference (as a founding member), anti-racism work, and work as a board member of several organizations and schools in Virginia.