like i said, it really sounds like mastitus. I use a product called "bagbalm" its almost like neosporun but it is used on the udder area. I know it would not hurt her skin, but i would wait for someone else to post and see what they think about using a topical on a glider. I don't know if she would ingest it. Which really wouldn't do any harm but still i'm new!!!
Call the vet, ask them for some advice