Sadly, teaching is both a talent and a skill. Without sufficient amounts of both it will be done poorly. Some people seriously have weird ideas about teaching. One of the most common of the weird ideas I've encountered is the idea that bullying is a teaching style. Don't let her bully you. Bullies often depend upon convincing others that they themselves will suffer if they are called out about their behavior. This is just a deception. If this woman is bullying you and your classmates you should inform her superiors. Bullying an artist is flat out one of the dumbest things I've experienced people doing. The worst bullying that I've experienced outside of high school has been done by potters. I just don't get this. It's like they think we live in the fifteenth century.