Please realize what you did in that post.Aris Khandr said:Try a game like Beat Hazard [http://store.steampowered.com/app/49600/] to start her off. The game basically plays like the old Atari game Asteroids, but set to music. Specifically, your music. Which means that she can get used to interacting with the game world while listening to music she enjoys.
With its Halloween theme and easy gameplay, Costume Quest [http://store.steampowered.com/app/115100/] is a great first RPG for her.
The Sims has always had a reputation as "girlfriend games". But the freedom to do whatever she likes certainly won't hurt for getting her used to controlling characters. The Supernatural expansion [http://store.origin.com/store/ea/en_US/DisplayProductDetailsPage/productID.256041200] should be right up her alley. It is also available on Steam, but not as a combo pack, thus the Origin link.
Hope those suggestions help.
Try not to single her out to "feminine" games because of her gender.
Women dont need to be eased into gaming via "non-threatening" games.
We can handle ourselves with the "hardcore".
OT: OP I think Bioshock/Alice would be a good start, LIMBO is she's into the platforming style of games.
Also, I am surprised at the distinct lack of Amnesia : The Dark Descent.
mmm, that delicious horror.