I would like to say that I am terribly sorry for the situation you were in, losing a pet is always hard, even if it is one you are just watching.
I would also like to apologise for the arguing posts on here. I promise that they are not usually like that, we really are a wonderful and supportive community and I hope you will come back to this forum to find friends, information and to research. We are all just lovers of animals and that passion doesn't translate super well over text.
Anyway, please know your chin is out of pain now and in a much better place.