Oh dear. Well the plan you gave her is a good one. I had something very like covid last Jan although I tested negative. I used raw honey in green tea and drank tonic watercwhich has quinine and took quercetin and zinc and D3. The infection lasted about 7 days but after a bad day 4(tight chest and general Ugh-iness it suddenly stopped. And I was amazingly well. Credit to Katfalls who shared her regimen with me.