I though you read the article you responded to previously, the information was in that article.
The article laid out the reasons, up to you to put any weight to them or not.
".....If the second boy had said to his Mum that he was never touched by George Pell, then surely he should be believed too...."
So you're a psychology major that has intimate knowledge of the boys state of mind when his mother asked the question, maybe you should write a paper on the subject.