Awwww, your poor little chook sending you a huge
One of the things we do with DD if she gets a cold is nice warm steamy showers so the bathroom is all steamed up and humid kwim? It cleans everything out and no need to wipe the nose for a while We also prop the end of her cot up so she isnt flat in bed to help with the coughing.
Wish I had more to offer, but I do hope she is feeling better soon