Get her a play money account and play with her for a while. Hopefully she won't consider that gambling and will arrive at her own enjoyment for the game.

Also see if you can get her to watch a few poker shows. Tell her about which are the 'good guys' and 'bad guys'. Treat the poker pros like celeberities / tv stars and it can become like a 'soap'. She will hate this guy, his wife is cute, Gus is nice etc etc. It helps!

It worked a treat with my wife. She's a great girl - but it is much easier that she now understands BR management and loves beating up on me in play money sit n gos. She also loves the size of my roll!