With that said, I regret in hindsight that I didn't force her to try Animal Crossing back when it came to the Gamecube 15 years ago. It was very much a prototype of the casual gaming trend that's popular now. We might've found some common ground back then before our ages caused role-reversal.
I can't find it now, but there was a heartwarming story on reddit a few months ago about a dad dying of cancer and playing BOTW on a switch in his hospital bed, and bonding with his adult son over it— he never even made it off the Plateau (the initial tutorial section of the game), but was having a ball running around collecting plants, making potions, getting gear, whatever.
Even if the violence level of Assassins Creed or God of War isn't your cup of tea, something like Detroit Become Human or Horizon Zero Dawn could be a good fit.
It is sort of like assuming that someone who likes guitar rock songs would like metal, because both are music.
FWIW, many public libraries have a small collection of Xbone/PS4 games, so if you got the base hardware, there'd be an opportunity to sample a bunch of things quickly to try different styles and genres.