We're not neurologists here, but if she's in an ICU, she's being seen by every specialist she needs to be seen by. Now, not all docs are equally good at what they do and not all hospitals are equally good, but if she's had brain function tested she is getting neurological care. Know that different individuals react differently to the same treatment, and that the condition they come into the hospital with differs as well. You're also talking about a woman who isn't super old yet but getting there, and she is quite overweight, which is probably the greatest risk factor for this problem, so there's that. What we've all learned that we'd all rather not have learned with covid pneumonia is that ventilators aren't easy to recover from being on. If you've gotten so sick you can't breathe without help, there's all kinds of things the body does to protect the person that shuts some things down. It can take time for those things to come back on again, or sometimes they just reach a point where the body isn't strong enough to do that. Blinking is a reflex, not indicative of high brain function. So is coughing. When you say nobody seems to know why she's not responding, know also that nobody actually understands the brain or the human body. There are things we've learned and much we haven't, more that we haven't. So everything is possible at this point, to answer your question. It could be she's just taking some time to clear. It's always possible strong medication can cause bad outcomes. If her lungs are still not functioning well, she's been and still is oxygen deprived, and nobody knows until she wakes fully if that deprivation caused permanent damage. Which leaves you with two options, the same options all of us are left with when we end up in critical care at a hospital. Either you wait and have confidence in the doctors who work at that hospital, or you don't have confidence in them and need to consult with better docs if you can afford that. Know that most local hospitals especially not in urban settings near major universities are usually not staffed with the highest qualified professionals in the same way Apple can afford to hire more qualified people than a living room startup. Money talks. If it were me, that's how I"d decide -- if I trust the hospital I wait. If I don't, I try to find better care. Peace.