Okay, cut out the salt and sugar; is she eating on her own, or are you syringing into her mouth, or tube feeding? Her poop was green because she wasn't eating enough...it's a good sign that it's not green any more, but watery isn't good, either.
I think you need to get more nutrition into this girl. The very best thing right now, IMO, would be to get some baby bird handfeeding formula at your local pet store. It's made for hand feeding baby birds (like parrots), and it's packed with nutrition. It's a powder that you mix with water into whatever consistency you want. If she's eating on her own, you could even mix it quite thick, sort of into chunks. If she's not eating on her own, make it soupier and blend it really well, adding yogurt (not flavored, it has too much sugar - just plain, low-fat) and maybe just a PINCH of electrolytes. Then, squirt it in SMALL amounts with a syringe. Don't go too much at once or she could aspirate it.
Water, also. WHen I've had sick ones, I do 2-3 syringe fulls of formula, then one of water, etc. Also, they need to be fed every 3-4 hours during the day.
If she's eating on her own, there are really good, nutritious veggies that might tempt her to eat more, like tomatoes and cucumbers. Dice in small pieces, then sprinkle with the baby bird handfeeding formula so she gets some nutrition via that, as well. Often, they're attracted to eating tomatoes because they are red.
IMO, the most important thing right now is getting nutrition into her.