This sounds like the point in recovery where my chicken started stinking. And yeah, the smell was pretty bad. The warm salt water rinses twice a day really seemed to help. I used one teaspoon table salt, the fine stuff, in one quart bath temp water and gently poured it over her to really rinse the area. Oh, and I had a spare quart of warm, non-salty water to rinse her after I let the salt water sit on her for a couple of minutes, just in case the salt left her stinging. Just figured I'd rinse off the salt in between the treatments. But that's just what I tried. I'm no pro. (I just read that Epsom salt is gentler on skin, but when I used salt water treatments on stinky wounds, I read to use table salt. I imagine either will help.)
I don't know if you've got access to a feed store that sells tetracycline hydrochloride (Duramycin for many, but that's not the name on mine) and I don't even know that she'd need it, but that was something I gave mine in the hopes that she wouldn't get infected. No matter what you've got access to, I'd say that with a caring human on the job she's got a good shot at healing!
Hope it works out to keep her warm. I read somewhere that 80 to 85 degrees F is good for convalescing chickens. When the temp got below that for me, I did the same thing and covered part of her crate with a blanket. Chickens are good and tough, so whatever you can do, she'll take it!
Will be thinking of ya. : )
