So she said something mean to you. So what? Be the adult and rise above it and do all the things that people tell us kids to do when someone says something mean.
I thought you were supposed to be good. But you're really not. Mrs Ruby is better than you could ever be. At least she treats people with respect.
Oh, what are you going to do to me now? Teach me a big old lesson because I was mean to you? Because I'm telling you you're acting like a horrible person? Go on then. Do it. Prove me right.