Doctor or Drug Dealer?

Is it ever appropriate for a Rheumatologist to prescribe Ritalin? I know a wealthy person who has made friends with this doctor. She is elderly and complained of being tired. She has arthritis and is on Humeria, but this doctor also has prescribed on going vicodin and Ritalin because she complained of being tired. She is also on prednisone and antidepressants. She has also loaned this guy substantial amounts of money. Is this appropriate? Is it just none of my business (she’s family.) She also has high blood pressure and seems to be showing some early signs of dementia. I don’t know if it’s real or the drugs.