Moshe, I'm amazed that she wasn't suspicious of your questioning. It's hilarious that you were able to pull this off.
It's really annoying to hear JW's brush off the 1975/Armaggeddon hype. My mother was studying with a pioneer around this time, she really drummed into my mother's head that 1975 was the end and that she only had a short period of time to save herself and get baptized.
The events surrounding 1975 was common knowledge to non-JW relatives, bible students, neighbors and media outlets.