I think you should expose her to many different games.

My good friends mom who we'd say is a non violent, romance reader, has been obsessed with Age of Empires for over 20yrs since she watched me playing it one day on their living room desktop and she wanted to give it a try. She plays it every day.

My 70yr old father loves Mario games still. He never was a gamer and only picked up a controller when I pushed him too, I've since been told that in his 60's he picked up the Wii and started using it.

My Wife loves RollerCoaster Tycoon, and SIMs, I've been trying to get her to Try Raft which myself and my 2 kids play.

As I type this, I think I would recommend Raft to you as it has a story element and can be played with minimal violence.