I have noticed that "you know" is one of her favorite expressions.
She has cut way down on the "you know" thing too. It was very irritating.
For years I have percieved her "you know"'s as COMMANDS, subliminal or otherwise. This is the way it is, she pronounces or declares--YOU KNOW THIS IS THE WAY IT IS! And no, I'm not being glib. Wish I were.