I have had anxiety since I was a child. I sometimes went to two or three day long church camps and later, as an adult, had to go to out-of-state work related conferences. I would have anxiety for weeks before the events and the entire time I was at the event, but I knew I had to hide it and I always did what I had to do. Now that I am older the anxiety is still there and it causes problems with my blood pressure. Those well-meaning people who made me do things I was not comfortable with left me thinking I had to conform to their expectations of what was normal and I did learn to do that, but my anxiety was still there and causing health issues.
My son also has the ability to look like he is not anxious on the outside and keep going. He is a good actor. But he cannot fool the blood pressure monitor.
I don't think the principal should be able to kick your daughter out of school for not going.
