Is there any way you can get her to a vet? Steam may help reduce upper airway irritation and to help to her breathe, Could you set her in a hot shower(Not under the water) for a while and see if that helps. I'm totally inexperienced with toxicology care, much of my information is coming off the...
:welcome
What's the temp in your brooder? Are you providing deep enough water for them to clean their nares out with? What kind of bedding are you using?