If they want to put her in for the 3-4 day EEG, it will be the best test as far as epilepsy she can have, in my opinion.
I was there for four days and it was extremely boring; you are videoed and monitored 24-7. My cord was long enough that I could go to the bathroom in privacy, but that was it.
But this was where they were able to capture my seizures, so it is definitely worth it if they want her to do that.
For the first couple of days they had me hooked up to a heart monitor simply because I have a very small heart murmur that I don't even realize is there. Because I have severe asthma, they had an IV tube inserted. Your friend should not have to have all of this.
Every time I got out of bed I would pull some wire out and the blasted beeping would start and a nurse would come running in. I finally begged them to call my doctor and tell him that my heart murmur was absolutely no big deal and to please let them at least unhook that one machine. Then I had one less set of wires. I had gotten to where I was using very foul language every time I got up and pulled wires out. At first I forgot I was on TV, then it just didn't matter. I was 55 at the time and I felt I had earned the right to say what I wanted to under those circumstances.
After it was all over, I was so glad I had this four day test done. It doesn't hurt at all. It is like the worst hair day you can ever imagine. But, if they want to put your friend in th hospital for this test, please encourage her to do so.