The Church has laicised a priest for having a "long-term inappropriate sexual relationship" with a woman, in what is believed to be an Australian first.
The apology is the culmination of a seven-year legal battle Ms Herrick has waged against the Church over the relationship she had with Fr Thomas Knowles over a 14-year-period.
Tomorrow, her civil damages claim against the Church will be formally settled in the NSW Supreme Court.
Ms Herrick was a shy, 19-year-old with hip dysplasia, which caused her to walk with an abnormal gait, when she first met Fr Knowles.
He cultivated a close relationship with her at the church, Our Lady of Dolours, in Chatswood.
When she was 22, Fr Knowles instigated a sexual relationship with her.