After earning her master’s of Christian education degree from Reformed Theological Seminary in Jackson, Mississippi in May of 1991, she accepted the position of Director of Children’s Ministries at Christ Presbyterian Church in Tulsa, Oklahoma. During her years of ministry there, Ruth invested much energy in making missions an integral part of the Christian education curriculum. She also served on the missions committee. She had been on various youth and adult mission trips to Brazil and Mexico.
In 1997, Ruth was invited to return to Brazil to serve as director of the Christian Education Department of the Edward Lane Bible Institute in Patrocinio, Minas Gerais. Besides teaching classes, she also administrates and coordinates all the students’ field/ practical work.