My one hen apparently got frostbite a couple weeks ago. I feel horrible that we didn't notice and her one foot looks like most of the toes are dead. She is walking okay but both her feet are swollen. I'm thinking it's bumble foot but I don't see a dark scab anywhere. I'm also nervous to treat her frost bit foot because her toes look dead but they haven't fallen off and she can still walk. How would you treat this?