It's all about me!

So I've come to the conclusion today that my cooperating teacher has a narcissistic personality disorder. She barely taught them today, due to all of the yearbook pictures she wanted to take care of. She said she was feeling really stressed out. She was planning on me taking over the 3rd period class and reading the textbook and terms, so she would be free to wander around the building. I said that's fine, I would love to teach the class but I'm not sure that it is legal for you to leave the room while I teach. She left me alone this morning and it thankfully didn't get too out of hand. I know there are some troubled students in these classes and I would hate for a fight to break out and to be the one that is responsible. Her response was that all student teachers are typically left alone when they teach, so it's the way things are done in the school. She reassured me that she wouldn't leave me alone with the really tough kids. I guess I can deal with that for now. If I get truly uncomfortable I may take some action. It's too soon to take a stand, even though I know that I am right and she is once again being unprofessional. I want to pick my battles, because I have a feeling that anything I do say will probably be disregarded as she has not been the best listener. She ended up dumping the students in the gym because she only had two. In her mind you shouldn't teach anything if you have only two kids. I view it differently. These two kids should benefit the most from coming to class. They should get rewards and have a productive day of learning so they can be light years ahead of those who failed to show. After 5th period the psycho lady said she felt that she had a productive day and was happy about everything that she accomplished (on the yearbook). She brought the students to the auditorium for 6th and 7th because she didn't feel like teaching, even though they were supposed to be in class. So no teaching occurred today, the students received diddly squat, but she had a productive day. That's great for you, you stuck-up asshole.