Give this "JW fix" some time to wear off. Maybe don't try to push the subject too much right now, and try to find other things of interest to get through to the real person. And if she starts aux. pio., that can quickly become a drag.
"I told her that I guess I'll just be the only one to die at arrmageddon."
Personally, I wouldn't use a line like that which would give any type of legitimacy to the WT dogma. I'd sooner ask whether she had made all the necessary adjustments to her Reasoning book so that she wouldn't be taking old light door-to-door.