I am glad she is a bit perkier tonight.
Generally, bright green poop means that little to no food is getting into her system and she is starving.
I have no idea what it could possibly be............is it possible that she could have picked up a nail some how?
How does her breathing sound? Does she breathe normal or short? (thinking maybe fluid build up in the body cavity)
If she was my girl, I would only feed her a high protein diet - scrambled eggs are good and easy to digest; her own pellets soaked in water are really good for her. Without protein her muscles are being used up to support her organs.
The foods you are feed, while good you are getting something into her, are not enough to support her muscle maintenance. I know you are worried about keeping her hydrated - the soaked pellets will help with that. You can even try offering her a raw egg - see if she will drink it - the bright yellow of the yolk should stimulate her to want to clean the egg up.
I feed my flock a daily treat of soaked pellets - in our dry desert heat, I want to be sure that they are taking in enough water - plus everyone in my flock loves it.
for you and her.