My chickens have never experienced cocci. Here's a link that might help: https://www.backyardchickencoops.com.au/blogs/learning-centre/coccidiosis-in-chickens-prevention-symptoms-and-treatment-tips :hugs
I agree with @Table4Six for many reasons. You aren't a terrible chicken momma! I bought 2 ducks and about 5 months ago they caught Bumblefoot. Anyway, they healed up just fine with the proper care in a week! Anyway, my point is, if you handle her with proper care, she will be fine! (If there's a...