I did find a vet from the list that would check a fecal sample it will cost $30 and they
would see her for 70 plus tests.She also told me she didn't think she had cocci.
If Cocci can be seen under a scope I wonder at what strength it could be seen at.
Can you post a picture of her poop and her face? Has her crop emptied yet? If her comb is pale? If it is, I'd be willing to bet that she's anemic from either the mites, some other disease or both and that has weakened her so much so that she can't walk. I guess it could be coccidiosis, but unless she's drinking a normal amount of water, she'll never get the correct dose of Corid or Sulmet.
The upside of going to the vet would be that they could show you how to give her sub-q fluids, tube feed, set you up with the proper meds, syringes, tubes and sell you a bag of fluids to take home.
I really feel for you.