Oh man poor girl! Who knows what she went through. I would keep her separate for the standard 30 days if she were in my care, but that is your call, you know more about the situation and what she may have been exposed to. I don’t think it’s worth risking introducing your chicks, though.
Right now focus on getting her fed well and some fluids. Electrolytes are good, or water with a little nutridrench. You could make her scrambled eggs or make her chicken feed into a mash to get her to eat a bit more if needed.
Check her over really, really well for injuries hidden beneath feathers and tucked under wings. Check for mites and lice, too. I would look closely at her ears, eyes and mouth for drainage or infection, also. Looks like her comb got damaged, treat that with some Vetericyn, chlorhexadine or just saline rinse if that’s what you have available. Then keep an ointment (w/out pain relief) on it until it heals.
For her eye, do a check to see if anything is stuck in it. Then rinse that with saline really well. You could also try a warm compress instead. It’s a bit hard to tell from the pics, but is there an eyeball in there? There is terramycin eye ointment you can get at TSC or Amazon even I think and that would probably be good to use. Someone may come along with more experience on the eye injury, but that is how I would treat for now with my limited knowledge on eye injuries.
Seems like a lucky chicken! And lucky neighbors to have you to take care of her!
