The only thing I read about the disavantages of diluting urine is that the anti-bacterial effects will be lesser, which could be important in case of an infection. There are many solutions that could work together to help with her situation. You might want to have a look at the homeopathic drops http://naturinologie.info/english.html#Homeopathic and the universal remedy http://naturinologie.info/english.html#Universal_Remedy . You can also read the testimonials on kidney failure etc. http://naturinologie.info/english.html#Testimonials Good luck to your mother