Well, she's still hanging on. She's alert with a very small appetite. If it's okay, I'd like to give a quick run-down of what we are doing and see if you have any further suggestions.
Mostly I force feed her and use a syringe to get liquid into her (a 1/3 electrolyte, 2/3 water mix) - although she will eat some watermelon on her own. I've been giving her Nutri Drench as a supplement, scrambled egg, a little plain yogurt, and some soaked chick starter.
She's often asleep but has moments of wakefulness.
In the morning I make a betadine/warm water bath and soak her backside for about 10 minutes. She gets a blow-dry to keep everything dry, and I trimmed feathers around the wound. Three times a day I use a syringe to flush her wound with a betadyne/wound wash (largely purified water) solution. And, because she still does a little pooping, I clean the wound area which is directly beneath her vent afterwards.
Part of me wonders, "Is this too much time/energy for one chicken?" And then part of me wants to do everything I can to help her back to normal - partly because I feel so terrible for her delayed diagnosis.
Okay. Sorry for the ramble. Any suggestions? Words of wisdom? Thanks so much.