I don’t know what Lizzie understood, but I’m pretty sure that she felt wanted.
One day, when the "where do babies come from" question comes, it's probably going to have a bit of a different spin to it. The miracle of creating life isn't as relevant to me as the miracle of watching a life. For me, it's not so much a question of where do the babies come from, but how did my babies get to me. :)