The mother of all continuity errors

I was just looking back on the whole Paige McMillan line (now one of my favorite stories on the site, and as far as I know the only one that could be regarded as complete) and just realized that Enfuego plus everyone else who participated missed something very major in the early parts of the branch. Apparently Sarah and Paige were supposed to have a 5 year old brother. And we all just forgot about it. Nice bit of trivia for the wiki...