It sounds like she warned you that her personality clashed with your daughter's and asked you to put her in a different class to prevent any conflict between them, and you didn't do anything about it. Maybe she thinks that it's okay for her to take it out on your daughter now since she warned you about the conflict and you refused to listen to her.
Obviously it is not up to her to decide who is in her class and it's not right for her to mistreat your daughter,but I think that no matter what course of action you take, your daughter will still have to switch classes. If you get her in trouble and continue to keep your daughter in that class, she may find alternate ways to get back at you for it.
Obviously it is not up to her to decide who is in her class and it's not right for her to mistreat your daughter,but I think that no matter what course of action you take, your daughter will still have to switch classes. If you get her in trouble and continue to keep your daughter in that class, she may find alternate ways to get back at you for it.