First of all, I want to preface this by saying that it is terribly sad what your son and your family went through, and I hope all has resolved.
But what has the fact that the boy may have been Catholic have anything to do with him molesting your son? You are not suggesting that the Catholic laity has greater proclivity to sexual deviancy than Protestants?
Perhaps that she means that we Catholic boys, so many of us having been molested by all of the "many pedophile" priests, are simply acting out due to the horrific experiences we endured.
IT JUST MAKES ME WONDER AS I THINK ABOUT IT, IF THIS YOUNG MAN WAS MOLESTED HIMSELF BY A PRIEST. BEING CATHOLIC MAY NOT HAVE HAD A THING TO DO WITH IT, BUT GIVEN THE HISTORY OF SOME PRIESTS, I HAVE TO WONDER.