Wry neck can make a chick suffering from it appear hopelessly ill. Since it's easy to treat for, I would do that on the chance it can restore her to normalcy. Vitamin E 400iu once a day with either a sliver of selenium or a soft boiled egg. It can accompany other illnesses in that it's caused by a vitamin and nutrient imbalance. Continue with the antibiotic the vet prescribed unless they gave it to her in one shot.
I had a chicken once, actually my very first one, that became paralyzed from the neck down, could not stand or walk or move except her head. I was able to get her to eat by holding a dish of food under her beak. If you cannot get food into her that way, you will need to tube her, and that goes for the vitamins, too. Unless you can get food and water into her, she won't get any better.