Why won't my baby goat eat?

My dad has a farm with goats. One goat in particular gave birth and died. My dad has been bottle feeding the baby goat. We noticed the other day that the goats head just flops all over the place and she is so weak that she can hardly stand up. She wasn't like this in the beginning. I can't get her to eat at all. I've been feeding her with a syringe and I read that this can cause fluid in their lungs. The vet says that she was really dehydrated and things don't look well for her. She seems a little better today than yesterday but she still does not want to eat. I give her a little water and then a little milk using the syringe but she does not want to eat. She will not take the bottle, but she does pee and poop. Her poop is not firm, but at least she is having activity in that area. Her baaa, is stronger today than yesterday but I'm really still concerned. What can I do to get her back to the bottle feeding?