I'm sorry to hear how it affected your wife. While I agree with you that minimizing COVID as "just a flu" is a mistake, I think that's not only because COVID can be serious but also because flu (like other common respiratory viruses) is known to have the potential for severe chronic sequale and to target the weaknesses of bodies they infect.

If you haven't already, I suggest you take a look at the FLCCC's I-Recover protocol (https://covid19criticalcare.com/treatment-protocols/i-recover-long-covid-treatment/)

I hope and pray that your wife can fully recover in time.