Goodoh!! She will feel MUCH better in a few days. Nothing like the comfort of your own home.
I don't know a great deal about no vaccinations -- I probably would have gone that route with my sons if I had been aware of it when they were small. I did watch them carefully to see if they had any adverse reactions.
For school, she will have to fill out a form, to protect the school's liability, no doubt. There are lots of books out there to help her figure it all out.