Better lighting and clearer photos are a must.
I'm so sorry you're dealing with this. I believe those look like intestines. Is it possible you have a rat or mink(or some other member of the weasel family) they can and will attack chickens this way.
It could also be cannibalism either started by something unrelated or just from the other birds pecking her.
More photos would help but in truth if it were us we would put her down almost certainly as we don't have access to a vet and her chances are not good.
I'm so sorry you're dealing with this. I believe those look like intestines. Is it possible you have a rat or mink(or some other member of the weasel family) they can and will attack chickens this way.
It could also be cannibalism either started by something unrelated or just from the other birds pecking her.
More photos would help but in truth if it were us we would put her down almost certainly as we don't have access to a vet and her chances are not good.