There is no need whatsoever to feel guilty.
I am glad that you are both feeling better.
One thing that you may look into is NAC (
https://www.ncbi.nlm.nih.gov/pmc/ar...WMpjv8lVgzgj9a-7N0Bbo__6AaEGBhcuNDX7hGAfVOXaw).
The FDA is trying to get it to prescription only and Amazon pulled it from it's site. However, you can still get it from reputable places if you look around. I am not sure if it is okay for children so be sure to look into that.
I was taking that along with Vitamin C, D3, Zinc and L-Arginine.
Fortunately my case was mild..but that was bad enough and I am still working through the fatigue.
As far as anxiety goes, I do wish you well. The main thing to do is be good to yourself and know that this is not your fault and that you are not alone.
Stay strong and I do hope that this helps.