I would try two things before resorting to the last thing. I'd try an eyedropper to try get some fluids in her and see if she'd just swallow if you put it to the side of her beak. The other thing is if you have starter crumbles or any crumbles, and if not, then pellets, but put some in a dish and run warm water over it until it's all wet. Most birds think of that as a treat, but they're getting nutrition plus it hydrates them. You could also try cooked oatmeal, a can of tuna (in water), or anything else you think she'll eat.I tried dipping her beak in the sugar water but she won't swallow. She won't eat the eggs or look at them! I feel so bad! What do I do?
If you can't get her to eat or drink anything at all, then this is a last resort and I've never done it myself.
https://bitchinchickens.com/2022/05/16/gavage-tube-feeding-chickens/