Depends on what you read. He answers one emailer by saying that you simply stay with the molester if he promises never to do it again. And you don’t report him. Only if he does continue then you call the police but don’t allow the children to testify against him and make them visit him in prison. And welcome him back into your home when he’s released.
In the book, Created to be a Help Meet, they say always call the police.
I don’t agree with them on lots of things, but I do think it’s important that I speak to the thinks I do know.