I'm sorry for you and for poor heartbroken grandma
My only suggestion is that your gut is wise. I probably would have posted in response to her on your page exactly what you were thinking. "We could swap quotes from this man all day. If he only wrote in line with what you've chosen to post I would agree with you. It's all the other stuff about how hard and how often to tempt them and hit them that leaves me believing there is no way to spin this in his favor."
And I jump in sometimes even when the odds are against me. Someone else reading always needs it.
At least grandma knows she isn't alone