She went on to become the director of International Affairs for The Church of Jesus Christ of Latter-day Saints in Washington, DC, a position she held for twelve years. In that capacity she worked with ambassadors and other high-ranking authorities and leaders in DC and at the United Nations in order to open doors of access for the LDS Church throughout the world. She also served as the director of community relations for Special Olympics, Inc. and played a major role in developing the Special Olympics program.
In 1983 the BYU Alumni Association awarded her with the Distinguished Service Award for her contributions and outstanding service.
Campbell is the author of the 2003 bestselling book Eve and the Choice Made in Eden and completed its sequel, Eve and the Mortal Journey, in 2005.
Campbell and her husband, A. Pierce Campbell, currently reside in Arizona.