Marie Collins says it is 'morally wrong' for child abusers to be protected through the seal of confession. A survivor herself, she was recently appointed to a Vatican commission on protecting children from abuse.
She has been speaking after a priest this morning told how he would do anything to protect a child - but would not break the seal of confession.
Father Gearóid Ó Donnchú, a retired parish priest, was speaking in light of the publication yesterday of the Children First Bill.
The new law makes it mandatory for professionals - including clergy - to report situations where they believe children are at risk.
Marie Collins told the Pat Kenny Show here on Newstalk that the policy advocated by Fr. Ó Donnchú is unacceptable.
Father Ó Donnchú told Newstalk Breakfast earlier he is not sure if his stance would break the law - but if it does then he would be prepared to do that.