Are you giving the Miconazole twice a day along with the coconut oil?
If not, increase the Miconazole to 2X a day.
She does need to be drinking, but provide her with her normal food too.
Have you treated for worms and/or Coccidioisis? I think I'd also treat for Coccidiosis first (along with treating for the Sour Crop) to see if that makes a difference.
Corid Liquid dose is 2tsp or Corid Powder dose is 1 1/2 tsp per gallon of water. This should be the only thing in the water. NO ACV, NO Electrolytes, NO Vitamins.
More photos of the poop would be good.