Is anyone well versed in the parallels between the policies in the respective groups that have led directly to this problem, how they have dealt with the problem, how they have/haven't reformed?
How has Catholic church had the same problems as JW?
How has Catholic church been worse in their policies than JW?
How has Catholic church been better in their policies than JW?
As anyone knows, you can't directly criticize the JW to a JW. But you can criticize the Catholic church all day to a JW.
If you can establish the rights and wrongs of this issue with respect the the Catholic church, you can then bring up questions about the JW that will show how they have caused this problem and dealt with it inadequately.