Update on Penny:
Somehow she is still alive. I can't take her to a vet because I don't have the money, and the vets near me are not all that knowledgeable of birds; I live in a small town so our vet clinics are only really equipped for dogs and cats.
Anyway: I put her on the roost last night and took her down this morn. She is walking slower though. And is even more reluctant to come out if the coop. I've been feeding her various combinations of Greek yogurt, tums, and boiled egg mixed with feed. I stopped giving the acv because she won't eat anything with it, and it doesn't seem like it helped anyway. The pat two nights there's been watery white poop under her spot on the roost. It also has some yellowish chunks of the feed and boiled egg she's been having. Today Penny wouldn't eat until i put the mixture in her beak and tilted her head back, but then she swallowed. After I did this and massaged her crop, I let her wander around she pooped, as it was watery white with some bright green bits; presumably the grass she ate yesterday. I'm glad that although her crop didn't totally drain, she still gt some food through her system. But te fact that it was undigested makes me worry. There was still nothing in her vent but bits of poop even though her abdomen is still very swollen.
That's it. I really don't wanna put Penny down, but I am preparing used in case she dies. ): If anyone can give me any more ideas, that'd b great. Otherwise I'll let y'all know if she dies from this.