Also, be very careful you don't overfill the chick's crop. No more than 5ml at a time. Feel the crop after you give her around a teaspoon of food or water. That should be gone before you try to push any more into her crop.
Until she can eat and drink on her own, you will need to get a little water down her every couple of hours. And you'll need to feed her food several times a day.
Hopefully, the E will kick in and she will recover soon. If she doesn't respond to the E after two days, even a little improvement, she probably has brain damage.