How is she getting on? You could maybe try putting a half-dose of methylene blue into her container in the fridge, as well as the salt baths. Have been treating my axolotl, Pancho, for fungus on the gills that way and it's almost cleared up now. I like using the meth blue because you can leave it in the water instead of just doing baths, so you know something is fighting the fungus constantly, and it doesn't have chance to grow between salt baths.