In a reaction to poor physical health and her bereavement, Farrell developed a deep Catholic devotion.
She cited this transfer as her motivation to confront her Protestant peers with Catholicism, which ultimately led to her converting to Protestantism.
Her speeches would incite physical attacks from Catholics at times, which she recalled in her book Laughing with God (1957).
Her 1949 pamphlet Ravening wolves recounted forced conversions to Catholicism and detailed the massacres of orthodox Serbs by the Croatian nationalist Ustasha movement.
[1] Over the course of her career, Farrell addressed thousands of groups across the world, while operating her ministry from her home in Glebe, New South Wales.