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She was born in Oak Harbor, Ohio and moved to Santa Rita, New Mexico at an early age. She grew up there and attended New Mexico Western in Silver City. A year at Capitol University near Columbus brought her to an English class with Cecil Coffey where they sat next to each other due to alphabetical seating. Ruth stayed in Columbus and married Cecil "Red" Coffey on August 30, 1942. Red graduated from Capitol and then entered the Coast Guard during World War II. Ruth worked in Columbus during that time. She later graduated from New Mexico Western.
After the war, Red attended New Mexico School of Mines in Socorro. When he graduated they moved to Ray where they raised four children: Michael, Patricia, Jeffrey and Robin. Ruth and Red stayed in this area until 1995. During this period, they were both active in community affairs. Ruth taught high school English at the Ray District Schools for twelve years. Most of those years were during the 1970s.
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A memorial service for Ruth was held at Our Saviour's Lutheran Church in Tucson on November 21, 2009.