OH and if you're looking to get through bio-films... there's really not much better than S.S. Xylitol. "Subsequent studies have proven xylitol's usefulness in promoting wound-healing and interruption of bacterial colonies from producing biofilm that untreated led to Antibiotic resistance and uncontrolled Staph. aureus infections."
I'd have been more concerned about it being cancer if part of the information we were given wasn't "In the last couple of years I have given her Iodine which she has used to successfully eliminate smaller lesions on her arms."
Of course if these therapies don't help... then melanoma is likely.