Touhou is difficult, but "Easy" is still fun. Just don't expect to win, neither the adult nor the child.

Touhou is famous for its all-female cast of Witches, Shrine Maidens, Vampires and other female-themes cute characters. Its a Japanese single-person developer who does the music, art, and gameplay. The art of the official projects kind of sucks, but the character designs are unique enough that the huge fanbase iterates-and-improves upon the art style. Participating in the greater Touhou fan culture is fun for all ages.

I personally got started with Touhou 8: Imperishable Night.

https://www.youtube.com/watch?v=eNU6tZIBrvU

I originally bought this game years ago to play co-op with my then girlfriend, but I think it can work for your purposes too - Never Alone

I've not played these yet but they look good for a 5 year old

• Onirism
• Poi
• Monument Valley
• Aer
• Carto

A Juggler's Tale

Windbound could be another fun one.

Lots of great suggestions from others already, so I'll add some for when she's a bit older. I'd say when she grows up the Tomb Raider series would be great for her to play if you want a good female protagonist. And it may be too raunchy of a recommendation for a daughter, but if you want another good female protagonist I'd suggest Lolipop Chainsaw, a great game for when she becomes a teen if she keeps up the hobby. :)

If you're okay with some very black comedy (all spoken-aloud, nothing shown) and the occasional blood splatter when you get shot, the Portal games are good. The villains are robotic turrets with machine-guns that are defeated simply by tipping them over - so while they're acting in very violent and lethal ways, the player is just teleporting around and nudging them over to fall down onto their side. But I remember my kid being very offended when GlaDOS called the player character fat, and later reveals she mass-murdered a building full of scientists using nerve-gas.

Half Life Alyx + No VR mod

Street fighter 6. Pick Juri, Kimberly, Manon or more. With the new Dynamic control system, even your kids can easily play with you.