you said fungal pneumonia. Antibiotics will treat bacterial infection just fine. bacterial infection is nothing to mess with. if you dont know what youre doing, best to go with the docs and then get up to speed so it never happens again.
dehydration is the biggest enemy. if she goes into convulsions and is hospitalized that will be the culprit. an IV will reverse that.
you dont have the luxury of learning as youre curing with pneumonia. there is not enough time if you hit a snag. and doing it third party? insanity. SHE should be here, not you.