Crop content is food in her crop that slipped into her lungs however it would have had to be in her mouth before going into her lungs. That said; my hens had a winter illness, respitory type with mucus, wheezing and sneezing and the lot. I took willow branches and wild cherry branches and soaked them in simmering water for an hour and they started to maintain, after a week they started to clear up. I guess asparin and wild cherry cough drops might do the same. Think through what you would do if you had her symtems. I had a Jersey calf one time that had the scours bad, and wasn’t eating to good, scours- diarrhea = keopectate, fever/ not eating = aspirin, needs electro lights = gatoraid and more colostrum needed at feed store, feed 6 times a day. Called vet he said if the bull calf lived bring him in and we’ll give him a shot to boast his immune system. He lived, skipped the $400.00 dollar vet bill lived for 18 months and really produced great steaks and roasts. Think through the symtem ask folks on this sight and treat, the meds are out there and remember animals don’t pop a pill every time they get a headache so our meds sometimes work faster and better. I go by the philosophy what would Mother Nature do.