My girlfriend needs a new game

My girlfriend LOVES Red Dead 2... but just about nothing else. She's sunk a ton of hours into that game and it's only the second game she's ever completed. She's completed Hogwarts Legacy twice and Red Dead 2 an unknown number of times.

She loves open worlds, third-person, not too complex, story driven games. I've tried Middle Earth: Shadow of War, Skyrim, FarCry, Witcher 3 (currently), and Fallout 76 is next but so far they've all been more or less flops. Any other suggestions are appreciated :)