Adrian Dominican Sister Helen Therese Mayer, 86, died Aug. 18 in Adrian, Michigan.

Born in Detroit, she was in the 66th year of her religious profession.

She ministered in elementary and secondary education in Ohio, Illinois and Michigan and served as the administrative assistant for the Dominican Midwest Mission Chapter.

In the Archdiocese of Chicago, she taught at Regina Dominican High School, Wilmette (1963-1966); Aquinas High School (1966-1967, 1970-1973); Mother McAuley High School (1987-1995); and Queen of Peace High School, Burbank (1995-1997). She served as an administrative or office assistant at Queen of Peace High School (1997-2006) and the Dominican Midwest Chapter Office, Burbank (2006-2009).