I'm so sorry about your poor hen. Her wounds from your new picture look so serious and painful. You must be really upset about her injuries. It may be petty difficult to try to help her over the next few days. She will probably be in pain, but also will be hungry. Try to read the articles on tube feeding. Maybe your vet could show you how to do it, but you could probably learn by watching the videos. We are all pulling for your hen, hoping that she can make it. It will be tough in the coming days, and if you need any help or advice, people on here would help in any way.