Sinsinawa Dominican Sister Mary Therese (Loran) O’Malley, 98, died May 7 in Hazel Green, Wisconsin.

Born in Chicago, she made her profession as a Sinsinawa Dominican in 1951. She earned a bachelor’s degree from the University of Nebraska, Lincoln; a master’s degree from Catholic University of America, Washington, D.C.; and a doctorate from Columbia University, New York, all in mathematics.

Her ministry was dedicated to teaching. In the Archdiocese of Chicago, she taught at Rosary College (now Dominican University), River Forest, where she also was director of institutional research and a volunteer at the McGreal Center. She also taught elsewhere in Illinois, and in Connecticut, Wisconsin and Rhode Island.