Small update: I will preface this by saying I am still not optimistic about her prognosis.
HOWEVER, I am also sitting here flabbergasted. I'm stunned. I don't know what to think.
She was at the door of her crate wanting OUT, I opened it to check on her, she waltzed right out, no stumbling, and made a bee line straight for her crumble. Her breathing sounds completely clear. Her crop is significantly reduced. She seems more energetic. Her breath is still sour but that's to be expected. My husband and I were by the kitchen sink talking and she walked across the room to be near us!! She's currently walking around pecking crumble off the floor and going to all her little crumble stations. She also isn't trying to suck down immense amounts of water any more. She's even begging for treats?! (We will NOT be giving her any treats, only crumble, water, and her prescribed formula)
This is so strange. I was certain she would be dead. I will be taking this hour by hour with her. Like I said, I don't have much hope for her, but I am impressed by her resilience.
Chicken keeping is wild..!