Sister Lorraine Richard, 45, a former teacher of Regina High School in Hyattsville where she was known as Mother Mary of the Presentation, died of cancer Friday in El Paso, Tex.

She taught at Regina from 1955 to 1965, and again from 1968 to 1970. During that period, she also was a leader in the Forensic League of the Diocese of Washington.

She had served as president of the Moderators of the High School Area in the Diocesan Catholic Students Mission Crusade here for three years.

Born in Oakland Beach, R.I., Sister Lorraine Richard entered the congregation of the Religious of Jesus and Mary in New Hampshire in 1950. She earned bachelor's and master's degrees from Catholic University here.

Between her two periods of service at Regina High School, she was dean for two years of Stella Viae College in Rome, Italy, which is run by the Religious of Jesus and Mary.

After leaving here, she was principal of St. Claire High School in Woonsocket, R.I., and then principal of Jesus and Mary High School in El Paso until 1976.

At the time of her death, she served as liaison between the Diocese of El Paso and the Catholic Charismatic Movement in that city. She also was a director of retreats there.

She is survived by four sisters, Roma Bourassa, of Winslow, Maine, Blanche Murray, of Jamestown, R.I., Yvette Bichusen, of Kentucky, and Alice Unsworth, of Rumford, R.I.