 Hack, influenced by the Evangelicalism of her time, became involved in a religious controversy among the Quakers, supporting a Manchester minister, Isaac Crewdson, in arguing that Scripture, not Inner Light, should be the ultimate authority and that the sacraments of Baptism and Communion should be performed.She left the Quakers in 1837 and joined the Anglican Church soon after, as a sister and three of her children had already done.Her contribution to the controversy was a tract entitled "The Christian Ordinances and the Lord's Supper..." (1837).