Nice one... Did the mum enjoy it too?
In 18+ yrs of taking people up for flights I've never had anyone who hasn't wanted to go up again. I think that fear of the unknown before the flight worries most people. The actual flight is a pleasant surprise.
Next time ask for permssion to do a steep turn. My daughters love them and they also like it when I pull the nose up and then push it down...probably +1.5G and around 0 G.
They call it an 'up and downy' as in " Dad, can we do some up and downies?".
I also give them an old map with the route marked and a chinagraph pencil to mark things off. Also giving them a camera and responsibility for recording the trip. They enjoy it more when they are involved, even if they are just duplicating whatever you are doing.