I agree some doctors are just terrible, but there are some that do genuinely care for all of their patients. My mom had cirrhosis of the liver. Prior to finding out, one of the specialists that she was seeing kept telling her, oh it's fine, nothing to worry about - just an iron deficiency or something like that. Anyway, it was quite advanced by the time that she went to see another doctor. However, her specialist now is great. In a sense, the transplant specialist and donor gave her many more years of life... maybe not god in a traditional sense, but that's pretty god-like to me.
Anyway, perhaps it would be best to try a different doctor if the one she has isn't doing his job in your eyes. Hopefully it will get settled.