Paedophilia for the perpetrators would most probably not rate as sin in the first place, let alone a crime. It is 'normality' for these people and should be recognized as such if the ever approach the Sacrament of Reconciliation. If there is any residual sense of guilt for 'sin' they need to be told that absolution is contingent on them handing themselves into the police or to an agency which has the mandatory duty to report.
The Australia Bishops should know this and stop playing PR games to impress the Royal Commission and Australian Catholic laity and priests  who came to the conclusion long ago that they (bishops) have lost their moral authority.