Together with her husband Norman, Barbara planted the Tabernacle of David, a church in Cairns in 1996. A year later, Barbara and Norman also founded the parachurch Centre for International Reconciliation and Peace. Barbara and Norman helped launch the Canberra Declaration and the National Day of Prayer and Fasting. They have also led a number of prayer events for Australia Day and conferences in many Australian cities.
Barbara is also the author of several books, most of them on Australian history and biography, including one about a 100-year-old Holocaust survivor. Barbara was a finalist in the main prize of the Queensland Literary Awards 2018 for her memoir “White Woman Black Heart: Journey Home to Old Mapoon, a Memoir.”