Will she forget it the day after you tell her or will she learn it and keep it? Does she understand the idea of a data population and looking at summary information for those?
DS7 is interested in all sorts of math, he's even looked at random bits of calculus. If I redefine derivative for him, he'll retain it for a few days, but he'll forget it because he doesn't quite yet have the context to make it a permanent part of his mathematical thinking.
Oh wait, nevermind all that, the right longitudinal outcome is far more important than the momentary philosophical one.