I think this would be a good game for her to get into gaming with. It is a pretty easy game to learn controls. My wife had a real hard time with the 3D controls at first, but is getting more and more used to it.
If you have Xbox or Playstation, this game is free with their subscription services. I don't know what it cost for PC though. If you get this game, I am sure you will both enjoy it.
Oh.. we've got a PS4 that is essentially the media center for the house. I didn't realise it was free. That's awesome! Thanks dude!
Enjoy man. Its a ton of fun.