I have heard cases of Alzheimer's patients spouting words off or acting rudely, but, you cannot say what you do not know.
And, in front of her kids??!? And they were so casual- seeing mom go off is obviously a normal occurrence. sad.
years ago, (2005/6) when a new shopping center nearby was being constructed, the smooth surfaces were too much for some graffiti "artists" to leave alone. One slung out the F word, in simple lettering.
My DD, around 3rd/4th grade, asked dad at bedtime one night, what that word meant. She had not heard it/read it before. He hemmed and hawed, called it "an innapropriate act" and she asked finally him, exasperated, "Dad, do you even KNOW what it means??!?"
This same child, in 7th grade, asked me, "Mom, what is Mary Jew Anna?" Turns out, she was reading a teen crime fighting book, and the "meddling kids" had found a marijuana production site.
You cannot say what you do not know.
those poor kids. that poor driver. our poor world.