I feel
For you.  I went through this a few years back with my goose Gertie. I sat with her all day and night and just took a warm cloth and gently stroked her head trying to sooth her s well as clean the dried blood.  I had taken her to my vet to actually ask him to put her down so she would not suffer but he gave me eye cream and told me to give her 24 hours.   I felt that being with her that night calmed her, soothed her wounds as well as forged a bond that was deepened and never broken.  Good luck and I will pray for the same outcome