I also wanted to add, my feeling is that hens really need the hormones suppressed if they’re going to get through these serious reproductive issues. However, the hormones are expensive, and send them into a mini molt. For my hen who is on hormones currently, the benefits definitely outweigh the downside. Something to consider. It’s not for every hen with repro issues or chicken keeper, however. I think some people just drained their bird’s abdomen and treat with antibiotics occasionally. I have also had some success with Lily of the Desert aloe detox to help with swelling.
Edited to add, when I heard she had yolk and old blood in her cavity, I considered euthanasia very seriously. I had a couple tears out in the parking lot trying to decide what to do. I decided to give her one last try with the hormones and antibiotics so even if she does eventually succumb, I’ll send her out on a happy note. This might be her last hurrah. Time will tell.