When I suggested to my JW sister that the WTS has caused so much pain and division in our family, she told me it was because my brothers and I had made the choice to leave. We were responsible for the division---not the Society. We are the ones that chose to leave the love and protective shelter of Jehovah's organization and we are the ones that have the choice to return to the fold.
I need an intelligent comeback, preferably one that will plant a seed, not one too sarcastic. (That would just snap her mind closed.)