another mom
As a mother of 5 I suggest that you attend class with her - all day long for as long as it takes for you to determine what is wrong in her school environment. Check out more attention than she wants, volume of noise, confusion, something she is afraid of or insecure in, attitude or tone of teacher's voice, attitude of children, placement of her desk, reaction to routine, etc. You may need to finally homeschool her or find a class where the size is about 6 pupils to 1 teacher. something is definitely wrong in her life, protect her until you can identify it. Remember, what she sees as threatening may not seem that way to others, but it is her reaction that is important.