You remind me of my mother, when she meets some friends who talk too much she limits herself to saying YES and NO, however the ladies continue talking hahaha, mother tells them, I'll call you so we can continue talking, I don't have much time right now.
Some people don't consider other people's time. I imagine your mother trying to avoid her friends, hahaha. It's difficult to avoid people you don't know, and even more those who are part of your circle of friends.