Is she still lethargic?
From your description it does sound like she is suffering from Salpingitis (lash egg), which in an inflammation of the oviduct. Sometimes if caught early, it can be treated short term with antibiotics. Your girl looks to be swollen underneath the vent. Often that is something seen when a hen has a reproductive problem.
Since the "egg" is gone and you don't mention seeing another - take a look at the following link and see if the pictures are similar to what you saw
https://the-chicken-chick.com/salpingitis-lash-eggs-in-backyard/
Hens that get Flystrike often have an underlying condition. It looks like it's healed up fairly well. I've circled a place in your photo - what is that like. Is it like fat or pus underneath the skin?
If she is still lethargic, she may have an infection, it would be hard to know. You can try antibiotics to see if she will rally. A lot depends on if she has an underlying condition like Salpingitis.
From your description it does sound like she is suffering from Salpingitis (lash egg), which in an inflammation of the oviduct. Sometimes if caught early, it can be treated short term with antibiotics. Your girl looks to be swollen underneath the vent. Often that is something seen when a hen has a reproductive problem.
Since the "egg" is gone and you don't mention seeing another - take a look at the following link and see if the pictures are similar to what you saw
https://the-chicken-chick.com/salpingitis-lash-eggs-in-backyard/
Hens that get Flystrike often have an underlying condition. It looks like it's healed up fairly well. I've circled a place in your photo - what is that like. Is it like fat or pus underneath the skin?
If she is still lethargic, she may have an infection, it would be hard to know. You can try antibiotics to see if she will rally. A lot depends on if she has an underlying condition like Salpingitis.