It's been my experience that most girls don't really like Rockstar Table Tennis (really it's a lot like a fighting game, too much twitch gameplay)
Kameo is a good choice though, I know you said no racing but Burnout is also an excellent choice.
You might also look into DOA4 or Rumble Roses XX. only get DOA if you suck at it and she might be half way decent at such a game, otherwise consider picking up Rumble Roses XX. Another option is Tony Hawks American Wasteland, in multiplayer you can create a female character and as long as you don't stomp all over her it'll be good.
Again Kameo is still your best choice: female ava, interesting story, and co-op mode so even if she sucks a it she can yell at the game instead of at you

For single player she might enjoy Oblivion, Ninety-Nine Nights, or Dead Rising.
A lot of this you'd be better off downloading the demo and having her try it. After playing the demos my GF went out and bought both Burnout and Ninety-Nine Nights for herself. I bought her Oblivion as a gift and she played through and earned all 1000 points.