Thanks a lot Welasharon. I washed it well tonight, though her feet are basically clean as a whistle anyway (shrug) and I did the epsom salt thing. She was fine for it and didn't fuss too much. I tried to scrub the black spots and put neosporin on them. The offending areas have thickened skin and almost remind me of a callus, how they're a bit scaley and thick. I'm going to keep an eye on her and keep the spots clean and bandaged as best as I can.