Okay, to keep things simple, my 12 week old pullet got into a place she wasn't meant to get into. There was a rooster there and he beat the crap out of her. The only reason she lived is because, eventually, she hid her head underneath an overturned food bin and played dead. She was still alert and responsive when I found her, but she was understandably exhausted. I let her rest in a sterile cage for a day after cleaning off her wounds, only bothering her to syringe 3mL of electrolyte water to her every 4-5 hours, spray her wounds with anti-bacterial spray, and to mist her wounds with water between treatments. Two days later, she's doing much better. She's still resting a lot, but she's walking around, very alert, resists being syringed, and even clucks when I pick her up. She's also starting eating food again. Tonight, while I was treated her wounds again, I looked over her to see if her left ear or eye will be saved. The left ear is a goner, but her left eye might be saved. While I was looking, I noticed and cleaned off an area that was discolored from the rest. After cleaning it and inspecting closer, I'm afraid it's a patch of exposed skull. The picture on top is her when I first found her and the picture on the bottom is how she is now, with that discolored patch. Is that her skull? And if so, how am I supposed to treat an exposed skull? And please, for the love of God, don't just tell me to take her to a vet. I'm not going to spend $100+ dollars on a chick that I couldn't even sell for $15. She's also a very tiny breed of chicken that is very easily stressed, so if the stress of being attacked wasn't enough, I'm sure the stress of going to the vet will be the final straw for her.