And she plans to appeal to Pope Francis to take action against Christina Gallagher and her devoted disciple Fr Gerard McGinnity.
The woman was disgusted that four registered letters sent over the last year to Cardinal Sean Brady, the head of the Catholic Church in Ireland, asking for help did not receive a reply.
The woman, who doesn’t want to be named because her obsessed mother travels to the Achill centre every Saturday, said she could not get her mum out of the cult without the Church’s help.
She said her mother, who is in her 70s, was once a hard-working, warm, intelligent professional devoted to her family.
But now she was so brainwashed by the House of Prayer she said up to 100 rosaries a day, attended six Masses, would fast for days on end and had lost half her body weight.
“It has destroyed our family and caused her long-standing damage. Every aspect of her personality has been taken over,” said the daughter.
“She comes home from the House of Prayer with these apocalyptic messages claiming Gallagher and Fr McGinnity are Our Lady’s children and followers have to look after them and never say a word against them.”
House of Prayer followers mistakenly believed it was sanctioned by the Catholic Church, she added.
Although Archbishop of Tuam Michael Neary had spoken out against it, that was five years ago and on the internet, which many elderly followers would never see.
“But Cardinal Brady has done nothing to stop a priest from his own diocese, Fr McGinnity, travelling to Achill every Saturday, ignoring his own parish and giving credence to the place.”