Thanks for the update! You might ask the vet for some pain medication for a day or two, if the vet thinks it would be safe for the nursing kittens.
Yes, Baytril is nasty, but it is god medicine. I know you understand how important it is that she get the full course of meds. How are you pilling her? I might be able to help. Another option is a long lasitnig antibiotic injection called Covenia. I don't know if that is safe for nursing kittens either.
I think I'll do a little research.
<in edit> well I researched Convenia, (injectable antibiotic) and torbogesic (pain medication) and both say that it is not known if these can be used safely in nursing mothers.