Meh if my grandma can get folders and hidden menus with just using simple box in a box analogies and a couple of drawings of the difference between RAM, hard drive, and CPU I'm sure your wife can too. Sometimes there's just the lack of curiosity about such things that prevents people from learning it, not age. I had a friend who mf'ing wizard at spreadsheets and vba because she likes what you can do with it. I tried to talk her though just installing an adblocker and newpipe install for better access to youtube and I might as well as have walked outside and started talking to my wood fence to get the same end result. So she drove over and I installed it for her.