Perhaps a better alternative would be to use a "Universal Remote". I personally use an RCA Model RCRN04GR remote, and it controls an Arris cable box, my Sharp/Roku TV for starters. That may be all you need for your own applications. In my application, it ALSO controls a Pioneer Receiver, a Sony DVD player, and a Magnavox DVD/VCR Recorder.
It may present Too Many buttons for your aunt, but, all I can say is I'm elderly, and it works for me, and my wife is elderly, and it works for her because she knows which buttons turn the TV on and off and change channels on the cable box and control volume and mute. And for her, that is sufficient.
