Bella is such a tiny baby girl. I would also recommend if you are having to feed her the food if she is not swallowing gently stroke her throat after you feed her a small mouthful in order to get her to swallow. Also to keep her warm you can get a snuggle puppy. It has heat packs that you can place inside and a battery run heart which simulates the sound of Mom heartbeat to comfort the puppy.
Amazon.com: snuggle puppy Also I would also recommend adding a probiotic to her diet as the antibiotics used to kill the coccidia also kills off the good bacteria in her stomach as well. I use
Pet Dophilus Buster also had coccidia when I first got him and had many of the same symptom's a Bella. Sending prayers for her continued improvement and best wishes and hugs to her Mom. I know how scary it is when they are sick.