Sister Mary Rupert Rafferty, F.M.S.C., who was a teacher and child care worker in the archdiocese, died Feb. 19 at Mount St. Francis in Peekskill. She was 90. She also served as a pastoral assistant at St. Anthony's parish, Commonwealth Avenue in the Bronx, 1998-1999. She taught at Immaculate Conception School, Irvington-on-Hudson, 1978-1979 and 1959-1960; St. Mary's in Croton, 1968-1970 and 1943-1946; Guardian School of Assumption parish in Peekskill, 1962-1968 and 1939-1940; St. Matthew's, Hastings-on-Hudson, 1960-1961; and in Manhattan at Our Lady Queen of Martyrs, 1949-1958, and St. Veronica's, 1947-1949. She did child care work at St. Joseph's Home for Children in Peekskill, 1946-1947 and 1940-1943. Born in Paterson, N.J., she entered the Franciscan Missionary Sisters of the Sacred Heart in 1936 and professed final vows in 1943. She is survived by three sisters, Elizabeth Shutt, Helen Wright and Patricia O'Dell, and three brothers, Peter, William and Thomas. A Funeral Mass was celebrated at Mount St. Francis on Feb. 23, with burial in the sisters' cemetery.