Hair Dye Answers

My mum’s just found out that the cancerous tumours in her bladder are still growing after 6 months of treatment & that further chemo & surgery are no longer viable options. Does anybody have any suggestions about possible effective holisitc treatments? Anything, no matter how strange, like 5 pints of avocado juice a day, it doesn’t matter as all suggestions are welcome as long as they are based on tried & tested methods. Thank you =0)
P.S. She has already done the following: switched to completely organic food, uses natural toothpaste & deodorant, uses natural henna hair dye as opposed to chemical dyes, has limited use of aerosols & household cleaning products, & has tried a bit of homoeopathy, although she didn’t continue due to some scepticism, despite my fervent belief in the benefits of it.