So, looking back, first we had the Dr at the CDC working on a cure for the zombie virus, then we had Herschel that truly believed that with either prayer or modern medicine the zombies would come back to their human form, then he gave up that notion. Then we met the Governor who kept his daughter locked up in a closet and, IIRC, was hoping that he might eventually get her back, but at the very least strongly felt that she was still in there somewhere. He even had his doctor working on tests to prove that zombies still retain some memory of what they knew before they died.
Now we’ve got possibly the little girl, but at the very least we’re working on the theory that someone is feeding them. On the one hand a single rat isn’t going to feed hoard of zombies, OTOH, it seems like they always try to keep at least one character (or small group) that thinks that they’re still human but merely sick and need to be treated and it’s just a matter of finding the right treatment.
Yes? No? I never really thought about this until now, but it seems to make sense.