So glad that she is standing. Probiotics in plain Greek yogurt or buttermilk may help her build up the beneficial gut bacteria. This is a good article that shows the damage in chickens with coccidiosis:
https://www.thepoultrysite.com/publications/diseases-of-poultry/206/coccidiosis
https://www.thepoultrysite.com/publications/diseases-of-poultry/206/coccidiosis