I would think people of almost any age would find it interesting - the reactions would just be different. Small children often like dinosaur bones, or leopards, or dogs.

That's my hope. She's just being brought up on very different movies than I was, and I wasn't even brought up on that many movies.

Possibly BuB is the best movie to begin that with, although it isn't clear to me that David and Susan will be happy for long.

I think they are fundamentally, perhaps even existentially immiscible, but whenever they swing through each other's orbits, they'll never get bored.