Nah, don't apologize. "Don't sweat it" is good advice. It doesn't mean they won't sweat it, of course, but it is good to be reminded that there's really not a whole lot you can do about testing when you're not taking the test yourself. I think it's the lack of control and the tremendous effect on the lives of your whole family that make testing like that so nerve-wracking.
So, kickball, don't sweat it!
Prep her as well as you can for what testing is like, give her a good breakfast, give her a pep talk about doing her best, etc. Then try to relax.
That's really all you can do!
