My chicken fell sick overnight, can someone please help?

Call the vet and let them know u cannot afford it but that you love our chicken a lot. Also try crying Lastly. try hand feeding her or at least give her water with a eye dropper. Maybe she got by something. Sorry about your chicken, I had them as a kid to and loved them. BTW, I hope you are vegetarian. Also the ASPCA has low cost treatment, not sure if they treat chickens but they could hook you up.