Thank you all for your wonderful words. I decided to put this post to show everyone that some wounds, even if they seems to be to serious and imposible to heal they will heal with care and time. When she first came I thought that the wound is to serious and infected to have a chance. But now it's almost healed. If Fifi will fight 'till the end everything will be fine.
Snookeys: the bridle is to convince the horse to go in the trailer. Those are horses that didn't saw a trailer their whole life. Some are very easy to load, some put up a fight. Once in the trailer the bridle is removed.