If she wears out a camera per year, I would definitely step up to a DSLR DX/APS-C or one of those mirrorless ones. I have over 150,000 clicks on my old Nikon D40X DSLR, and never had a problem, it is still going strong today; I could use it as a backup.
I have advanced to a newer Nikon D5200 and D7100 today. I have had zero problems with either camera, probably 100K clicks on each camera.
I have worn out a Canon S100 and a Panasonic ZS50 which are advance P&S cameras. These are compact cameras with a zooming lense on start-up, they are not very durable, and when I had a problem the ZS50, the mfg'r refused to repair them even though they were within the warranty, they said it was abused, it wasn't abused; but it was well used, so no more P&S cameras from Canon or Panasonic for me.