If it is a bacterial infection, buddy, you're welcome to my PimaFix--says it treats internal bacterial infections, so if you don't have Maracyn Two/don't have the money for it, you can use this stuff.
I'm gonna do some searching on the disease forum and on google to see if that's really what it is, and I'll let you know when/if I find anything.
Anyway, is she still eating normally and hanging out around the toadstools like usual? Because if so, that's a good sign!!