Companion Animal Parasite Council—Coccidia in Dogs
There's some more information about coccidia the parasite. Basically I would advise not letting your baby outside or near any other dog. If you have another dog at your house, he or she is going to be need to be testing and treated for this as well.
In order to get this baby to eat you're going to have to feed her many tiems a day and theser would be questions I'd be asking your vet. How many times, how much, and methods in order to help you feed your baby. Ask teh vet is her or she can even show you how to do it.
Also, I would have nutrical and your local E.R vet number and driving directions in your possession.
Poor little baby is going to need constant care right now. Also try to keep the little one warm as well. Lots of blankets and cuddles will be needed. Alot of members here make snuggle sacks, and I would advise either a heating pad on the lowest setting, or a warm water bottle for your little one.
Good luck, keep us updated.