Opossum tail home remedy?

The end of my opossum's tail looks red and raw. It's been bleeding slightly with some clear fluid (plasma?) at times. It looks like the opossum's been nibbling at his tail .. and also there's a bit of fur gone. Also there's some swelling, almost like a bubble of clear fluid. Some areas look like a darker red.





My local vet said she wasn't qualified for these type of animals.





Could there possibly be some thing I could do to assist the wound in healing? Opossum tail home remedy?
try treating it with Neosporin and wrapping it

c++