She sounds a lot like my mother.

Anyway, I recently read about this. A person will not interrupt another they see as more superior (in whatever form). If she's doing it to you "only" could be that she feels more superiority over you.

My partner is like this. He's told me before that his mother's stories bug him because she adds a lot of details into her stories and he's heard them a hundred times. Yet, he will NOT INTERRUPT HER. (She's a great storyteller, btw). You wouldn't want her as your enemy. His best friend, too. He's of a higher financial and educational level than he is. He does not interrupt him, either. His brother/sister.. he's intimidated by, does not interrupt. Me? ALL THE TIME! He will finish my stories for me so he can move on to a different topic. He is very easily distracted. He's told me my stories are too long (wrong).. and that if he doesn't interrupt me, he'll "forget what he wanted to say" (on my expense). I could go on.

Point is, it's about dominance. Your "friend" contacts you because she feels empowered by you. She did not at all appreciate your boundary because it took some of her power away. In order for her to regain that, she bombarded you with "boundaries" of her own.

Bottom line? She isn't a true friend, nor does she respect you as one. I would just cut her outof your life.