Well once again I'll disagree somewhat . Yes, in a perfect world the teacher should have known. But in reality I'm sure she had more than just the one child to worry about. She probably assumed if she told the child to do something that she would do it. I would be upset and ask her to watch her the next two times, but I'm not so sure that her not paying attention to only one child when she had many is really an offense worth throwing a fit about.
So I'd be mildly miffed at the teacher, but I'd be equally or more so miffed at my child. If she KNEW she didn't have permission and KNEW she was supposed to go to sports practice even if she didn't want to, then I'd be upset with her. If she had done what she was told by you and by the teacher, none of this would have been a problem.