Thanks for the support, guys. I am very worried about her.
I continued giving her Nutri-Drench and she started to pep up a little. She even went PUH! at the taste and tried to wipe her beak off so I know she is in there somewhere. I gave her more electrolytes and tried a mash but she wasn't interested. I watered it down a little more and dribbled it down her beak to try and get her interested in something. She made another poop, a very good one but green which could be from all the grass in their run or more bile yuck.
She began making lonely cheeps a little bit ago so I moved her outside. The other girls called her out of her box and she was able to get out and walk around with them. Seems pretty good, better than this afternoon at least BUT she is still limping. Very slightly so maybe she is just super painful? She looked much more comfortable outside, as it's a bit hot inside but not enough to run the AC. I saw her climb into a feed tub I have out for my crossbeak and she decided that was a nice nest to cuddle up in. She made an effort to take some nibbles but not sure yet if she got anything down. I put out their indoor waterer to make sure she could access several sources, as well as a small pan of electrolytes.
Going to go check on her in a bit, so keeping my fingers crossed. I'd prefer she spend the night with her gals because she feels safe out there.
I checked around their large run just in case and couldn't find anything. I had sprayed some wooden posts around their run to prevent spider mites (they creep me out!) at the same time I bombed the coop to prevent lice and other gnarly bloodsuckers. Maybe she ingested some grass from around it?
Everyone else is fine, though, and the product I use has less perethern in it than sevin. I also had them all OUT of the coop to free range while I worked so that everything could dry and fumigate out before I put them back in. They were out for several hours so not sure.