Let’s say a middle-aged librarian/writer had never played a video game. This person loves stories, language, and history and is not comfortable with graphic depictions of violence. This person would like to be immersed in a story that is also a game, and would prefer not to buy a whole bunch of stuff or acquire an entirely new skillset.
What’s the one game you would recommend?

@Julie There's one by Rhianna Pratchett called Lost Words: Beyond the Page - it didn't quite grab me past the early stages but I did like it and it sounds like it might be a good fit!

Others: Unavowed, old-school style point-and-click adventure, occult mystery. To The Moon (top-down adventure) and Firewatch (walking sim) - mostly story-focused with minimal "game-y" action elements if I recall correctly.

Also do want to mention SOMA - terrifying and violent in places, but amazing story IMO.