a lot of times when an animal is so skinny it takes much of their remaining energy just to digest the food they try to eat. so, with knowing this, don't be worried that she isn't going bonkers about the food yet. it will be a slow process...
i know its not a great comparison but i rescued a rubber boa last year. it was barely living, i believe that it was attacked by a bird or some other small animal. i named him Hanyo. his left eye was damaged so bad he no longer has it, and he became very skinny due to mouth injuries preventing him from eating. with about 5 broken bones total (a couple ribs included) it was a very slow, and in my opinion a painful recovery. once he started eating regularly it was easier to feed larger amounts of food. he became energetic again too, and now is one of the most active little snakes i've ever seen.
so hopefully we will have a success story to hear from you as well! once your lil girl poops, put it into a baggie and take it with her to the vet. it is possible that she may have an overabundance of parasites causing multiple problems in her body so just to be sure, get it all checked out. without knowing the full extent of her problems, it is easy to just assume [we] are doing the right thing. its much better to be sure what's going on.
hope everything is ok with her! are you misting with hot water in your bottle? the water temp should be about luke warm 8-12" away and try to spray near if not right on her. the more she is drinking the better for now. silkworms also are good for hydrating. they are juicy! lol