Inquiring about the future

Elizabeth: Mommy. When you are a grandma, are you going to have long hair and put it in a pony tail?

Me: I'm not sure. I don't know if my hair will be long or short when you have kids.

Elizabeth: Well...this person in Hawaii who was sitting here (she motions across the pretend hot tub) had long, long hair and a pony tail and she was a grandma.

Me: Oh.