Found is a folder that use used when the files system can no longer tell where they should rightfully be due to corruption. I would open that Found folder and copy them to another location.
After that, if that folder is on her computer, I would open a command bod and run this command: chkdsk /f and answer yes to doing it on reboot. Reboot the computer. I would do this at least twice.
If the Found folder is on the camera's memory, I would copy all the files off, and then format the removable memory card.
This is a cautionary tale to ALWAYS copy your pictures off the camera and eventually to a DVD or other secure place.