I'm going to tag in
@Miss Lydia @shawluvsbirds and
@ruthhope
Have you tried soaking her in warm epsom salts to help reduce swelling?
To me it, it looks like in simple terms she has a full prolapse or cloacal prolapse where you can see both the reproductive opening and the intestinal opening.
It's quite severe. I'd try soaking in a warm epsom salts, apply your ointment. You can also use raw honey, oil or Prep H. Do this a couple of times a day.
She needs extra Calcium to help with retention.
Can you tell if she's got an egg in there too?
Likely it will not go back in until the white material has sloughed off. Mineral oil can sometimes help when to loosen that material when you lightly debride it. The tissue will probably bleed. It also looks like she has the material in the intestine too. I suspect it's urates, but have not quite figured out what it is, I do know it can be gummy, sticky and harden - hard to get off, but tissue will usually not go in with swelling like that and crusted with material.
You may need to help push the tissue back in, see if she can retain it once you've cleaned her up, but it may not go back in.