Help please

Does anyone know what might be going on with this girl / what I should do next with this one?

What I’ve done so far:

- isolated in a comfy, cool, safe room.

- 20 min epsom salt soak & DE rinse.

- given part of a tums dissolved in water.

- given water & electrolytes

- was able to encourage a little eating

What I’d like to do:

- keep her on electrolytes for a day or two and consider adding a round of CORID or dewormer.

What I know:

- she’s been lethargic these past two days. I saw her sort of lifting her butt, sitting or laying to the side with her wings dropped and tail up. Walking slightly unevenly. When I went to get her yesterday she seemed to have perked up so I left her alone. Today she seemed worse, so into the dog crate she went.

- cloaca looks healthy and pink. She may have been straining when I first pulled her from the run but isn’t showing any signs of straining now. No prolapse, no discharge, no poopy butt - just a healthy pink cloaca.

- Young hen (~ 20 weeks) right around the age she may start laying or potentially just did.

- inspected for wounds (none). feet are also healthy and fine. Eyes are clear.