Does she open her eyes at all? Are her eyes intact? I do see bubbles in the eye of the last 2 pictures, which can sometimes be an indication of a respiratory illness. She may have been attacked and driven from her flock due to illness. It almost looks like her head was degloved (skin torn off) or pretty badly injured. I would get a look at both eyes, flush them out with some sterile saline, or eye wash, and treat with plain neosporin, or better some terramycin eye ointment which some feed stores have, it does not require a prescription. If you intend to keep her and try to treat her, you need to get some chicken feed, bird seed will not provide her the nutrients she needs. Until you can get some you can feed her cooked or scrambled egg chopped up, a bit of canned tuna. Any feed store should have the feed, you can get a small bag if needed, until you decide what you want to do. If she's blind in one eye, or both, then she will not survive in the wild, she will starve, or be taken by a predator. If vet care is an option, and you are willing to do that, they can give her a good exam and tell you more what is going on with her.