I have hearing aids, have worn them for over ten years. I have had the CIC (completely in the canal) ones that are hidden, and the ones I have now are the over the ear type with a small "plug" that goes into the ear itself. The ones I have now are not as good as the others were, but they didn't cost $4500.00, either. These are only about $300.00 and they work okay...but if I still worked I would have had to invest in another of the expensive sets (couldn't use a stethoscope with these). My advice is to find a good audiologist through your family doctor and get them through that office. Don't go into just a hearing aid dispensary and expect to get something that will really work for her. She will need to be fitted and tested and then monitored to make sure they're doing what they're supposed to. Good luck!