My dd11 is also an interesting test taker.
I'll have to remember that - I have one of those!
I agree that you should try to get the test and find out what the issue was -- it's probably something perfectly simple and ridiculous.
Since you don't know the people involved, your best strategy is to "act as if" -- just go in like you assume what you want is perfectly doable and there's no reason they shouldn't allow it. Assume they are reasonable people who will be quite happy to help. It may already be true, or your attitude may help it to come true, and if it's not, you'll find out soon enough either way.
