Since I never got an answer I can assume you are not a certified farreir which means you should not be messing with other peoples horses feet....particularly one that is sick!!
You and your friend may have invalidated any medical/life insurance if there was any on the horse.
You may have also set yourself up for a liability law suit!
I didn't answer you because I didn't want to get into that conversation - aaand I still don't, I already knew what you were going to say and it doesn't change anything or add to the conversation. Also I don't know what you think we're dealing with here insurance wise but this horse was $35, and that was just to cover last month's farrier visit cost. So, no man I'm not a farrier. The woman who taught me was also not a certified farrier, she was just a barefoot trimmer. She is a phone call away if I run into problems.