That sounds good, and I certainly didn't mean you're not doing everything you can to help her - it seems like you're doing a great job! She's lucky to have you!
I look forward to updates about her improvement...
This is really wonderful! Good work!
Although it sounds like you may not need the vet after all, I wonder if the vet might be able to give her some supplement that would be more effective than what you can give her?
I don't have experience with Newcastle, but it is very easy to find information and videos online that show the symptoms to be quite different from this peahen's stargazing. Affected birds twist and move their heads around uncontrollably due to neurological damage.
No need to cause unnecessary...
Poor girl!
There might be something useful here:
https://www.backyardchickens.com/t/653515/star-gazing
Or in this document; look at the "Thiamine/B1" section:
It is interesting to note that one cause of this condition can be Amprolium, a coccidiostat...
Definitely something for all...