What an opportunity!!!
Have her say, "Oh, I was just reading about your first leader that decided that Jesus came in 1914 based on counting the steps in a pyramid. Also, that vaccinations were called taking pus into the body, and that the second leader, Rutherford, had two cadillacs for private use, also a mansion in San Diego; that he claimed that God in no uncertain terms would resurrect David and other "ancient worthies" to live in the mansion, even deeding it to him.
"Oh, yes, also, I found out that the WTS was an associate of the United Nations for several years until it was exposed in a British newspaper. And last, but not least, please tell me about the millions the WTS paid out in court costs to victims of pedophiles."
Have her repeat this each time the dubs show up. They will be leaving faster than they came, I'm sure......