I was able to get an answer back from one of my go-to-people last night. Looks like I was correct in telling you what this could be, or at least one of the things. Take her to the Vet if you can. She needs antibiotic, as I told you and unfortunately, you can't just buy it, like we can here. the other option is culling her in case it turns out to be one of the respiratory diseases like MG, IB or Coryza. These will infect your whole flock and once they have it, it's for life. Yes they can get better, but will be carriers of it forever. This means any new birds added later will get this as well.
Me? I would take her to the Vet and find out what it is first and then make the decision on the next step. Good luck and please keep this thread up to date.
Me? I would take her to the Vet and find out what it is first and then make the decision on the next step. Good luck and please keep this thread up to date.