Shar......I am betting that before you get all of this done, those nodes will have shrunk back down. I had a couple of nodes do that to me recently, and I was a basket case. After they went back down, I realized that they couldn't be cancer.....but that they were just doing their job. I had some sort of infection.........I sure do hope that this is the case for your daughter.
When I was a child, radiation treatments were common for enlarged nodes. I had that treatment, and later, I had part of my thyroid removed because of it.....though it turned out to be benign. Kids have lots of enlarged nodes,,,but at least they don't irradiate them any more!