In her earliest printed letters from 1821, she agonises over the issues raised in sermons, and feels guilt over not praying regularly enough.
For the rest of her life, Wingfield earned the title "good Lady Powerscourt", by engaging in letter-writing and convening religious meetings in her house.
She is concerned by the calls for Catholic emancipation, but found solace in the growing numbers of Anglicans in England, Scotland and Europe who held similar beliefs to hers.
Wingfield attended the first meetings of the Albury Prophetic Conference in London, and was a frequent attendee at lectures by Edward Irving.
Daly may have edited her letters to remove elements which did not fit with his beliefs, in particular that she supported the secession of some Anglicans from the Church of Ireland.