Lethargic hen with pale comb hiding and acting strange

[Jessie9]

Hi! My ~2 year old (a guess because she was adopted) hen has been acting strange and I'm worried!
For about a week she has had a pale floppier than normal comb. Eating and drinking less. Had a poopy butt but just looked like normal poop.
Gave her a bath, dewormer, and some electrolytes.
She perked up that day but the next was back to acting strange. Now she has a weird colored poopy butt (maybe from the dewormer?) I don't think she's laying eggs. I have seen her eat a bit but not much and barely any drinking lately.
She is doing stuff like hiding in corners, hiding in piles of stuff and burying her head, staying in the coop most of the day. The other hens are starting to go after her.

Substrate in the coop is sand.
Food is egg laying pellets. She has oyster shells.
Stomach feels normal but maybe a little skinny.
Vent looked normal from what I saw other than the poop. Crop is empty. Breath smells normal.

Help please

 

[Eggcessive]

The yellow urates in her poop, which normally are white, can be a sign of dehydration or more likely, liver problems from a reproductive disorder or even cancer. Her vent is a little pooched out, so I wonder if she has a stuck egg or lash egg that she is having trouble laying. I would give her a human calcium tablet with vitamin D or a Tums orally. The Tums may need to be broken into pieces, but she could swallow the calcium tablet. Then get her drinking some fluids (maybe shortly before giving the tablet) and offer some watery chicken feed. Calcium will increase muscle contractions to help lay an egg or lash egg. Here is a good buy on calcium:
https://www.walmart.com/ip/Equate-C...Tr10CewkNQu6GCqfKpZOKWvkgPv_oiHsaAgtFEALw_wcB

 

[Bawkbok]

I'm not an expert but while we wait for others who are, I would suggest the following:
- clean up her butt feathers with mild soap (Dawn if you have it) and water. I wouldn't bathe her again as that can be stressful if a chicken is not feeling well, some like it but most do not.
- If the others are going after her, I would separate her to keep from being picked on and so you can better keep an eye on her.
- To get her to drink offer some electrolytes separately or you may need to offer some from a dropper, just a little on her beak so she can swallow. you can also offer some wet mushy scrambled egg to encourage her to eat.

 

[Bawkbok]

Sorry Eggcessive, didn't realize you were responding.