This is not a legal matter. It is an internal school matter for you to politely discuss with the nurse or principal.

There is nothing you can do. It is your mom's case, and she is the one that has to decide whether to pursue it.

We are not going to second guess your attorney. We know nothing about your case. Perhaps you can bring all of your case file to a second attorney...

They don't need proof. They can ban you and fire you for any reason (or no reason) just as you can quit or not shop there for any or no reason.

This is a Q&A forum. You have not asked a question. AVVO requires me to write more characters, so here they are.

Even if you had a valid lawsuit (and you don't) it will cost much more than $30 to sue, and that is all you would potentially be entitled to.

Yes you should be in trouble. You defied the teacher's instructions. Imagine the chaos if every kid did what you did.

Talk to who? This is a Q&A forum. You have not asked a questions. ...................................................................................

I can't imagine any judge buying that defense. Of course the cop was angry. You were endangering several lives, including your own.

The law doesn't (yet) dictate every potential aspect of our lives. You need to ask or choose other places to eat.