Everyone's experience is different. I don't think we should all tell her not do it based on our own experiences. I had it done. It was very tolerable and no pain afterwards except my lower back was a little sore for the first day or so.
I am glad that I had it done. My mitochondrial doctor is who ordered it. He was checking to make sure that Lyme still isn't an issue. I have been treated several months thru my port plus orals. I believe I have Lyme damage, but no more active Lyme. I am dealing with mito junk now and the spinal tap helped to confirm that. I also got 2 skin biopsies and a muscle biopsy the same day I got the spinal tap. The spinal tap was a walk in the park compared to the pain from the muscle and skin biopsies. I wasn't put to sleep for any of this due to my autonomic dysfunction.
I didn't get the headache afterwards either. Yes, I have met some lousy doctors but it really comes down to what each person is comfortable with in regards to testing.