Quoted from grantopia:Why don't you just play different machines at the same time and have her try to beat her own scores? Sounds like she is in it for the fun of it and spending some time together and you are in it for blood - not a good match ha.
I was going to suggest that too. I have 6 games and we rarely ever play a 2-player game. If I see/hear she is having a good game I will stop playing in between balls or at the end and go watch her play and encourage her. She feels like she sucks but she is really getting good. The problem is so am I so she doesn't feel like she is improving. Also when playing a 2-player game she sometimes has to just stand there and watch me play forever when I am having a good ball. She does like to watch me play once in a while to see things she hasn't seen yet on a game or learn basic handling skills. She picks it up fast.
Most of the time I just play "whack-a-ball" and don't take it too seriously. I practice handling skills and don't care if I goof and lose the ball. I like to try fancy shit that would be too risky if playing competitively. When a tournament is coming up then I start to focus on playing well for a few weeks prior.