The sad part is that reactions to vaccines are vanishingly rare but real. I’m wondering if this lady’s immune system had an unusually strong response and left her with some kind of autoimmune disease as a result. Fibromyalgia can be triggered after being sick with a virus and has been confirmed to be autoimmune.
But it is much better for vaccines to be mandatory to keep herd immunity for those that can’t have them and keep smallpox or polio from coming back. On the balance you just can’t afford to have it be optional.
Ironically the symptoms she’s describing sound like long covid which also gets ignored and denied support. It makes me wonder if her body did massively overreact to even the attenuated virus