Everyone, thanks for the replies, even if you considered it a stupid question. I got some input from people who actually have and train kids, so I'm satisfied.
Tiburon, the fact that your daughter even has that barbell means she kicks ass. Keep up the good work.
And Tamara, I appreciate the response, but I don't need to talk further about it. It was, after all, merely a question born of curiosity. And it's been answered, more or less, so I'm good to go. But I do appreciate the offer.
Thanks all.