Lets see... as a girly gamer for 360, I highly recommend
Viva Pinata, that farming shit is the best awesome game ever. There's VP Trouble in Paradise (sequel) you probably be able to find these days. Hopefully. Not only that, its very family friendly and great to get into.
Blue Dragon is an easy but great jrpg. ONLY if you're a fan of Dragon Quest style jrpgs though. Excellent for G rating.
Deus Ex: Human Revolution is an excellent espionage (think MGS non-linear with upgrades) action rpg. I say rpg loosely because you still have lots of people to talk that are involved with the plot and around you. Its neat as hell. Not rated G for sure though.
THEM LEGO GAMES omg. They're excellent
co-op fun silly games for me and my sweetie. Take your pick! I recommend Indiana Jones 2: The Adventure Continues and because its the most polished I've seen thus far. And Pirates of Caribbean is pretty good. They're all obviously family friendly.
Portal 2 is FANTASTIC puzzler, she must love it or you're kicking her ass out. I'd personally get the Orange Box if you can and get this too. Another great thing about Portal 2 is the
co-op!
Banjo & Kazooie: Nuts & Bolts is another excellent G rated action/adventure. If you recall the N64 games, this game takes it from there and adds on brilliant building vehicle mechanics that adds a whole slew of ideas of how to tackle a mission. The hub system is great. Can't remember if you can
co-op in this or not.
So essentially you got these to check out at least.






Jam it back in, in the dark.