I'd still give her the Calcium, but in one of the photos it looks like there's a Roundworm in the poop (see the photo I marked below) unless you know for sure that's a piece of something else(?). Other poop photos, there's mucous and perhaps a little blood. I'd deworm her.
To treat most worms that poultry can have except for Tapeworm you can use Safeguard (Fenbendazole) or Valbazen (Albendazole). Both are given orally by weight; they do not mix well with water.
Safeguard dose is 0.23ml per pound of weight given orally once a day for 5 days in a row.
---OR---
Valbazen dose is 0.08ml per pound of weight given orally once, then repeated in 10 days
Here's how to give oral medications:
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
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