Mom has Hydrocephalus. Where to find an advocate to evaluate the medicines she's taking?

76 year old woman, diagnosed with hydrocehalus at age 60. she has limited mobility, has had numerous visits to drs. regarding incontenace and stomach issues, had a hernia which became a bowel blockage,aspe rated fecal matter into lungs, turned into pneumonia. that was a year ago. this past week has been complining of terrible diarrah/constipation. She is on numerous medications for evey aliment for stomach distress, as well as taking over the counter meds. she also has some type of heart issue which she takes a daily med for. concerned about all the medications and there possible inrteractions with OTC's and each other. looking for a advocate to evaluate her medication intake. Would like to find a third party that would not be connected with her current doctors.