George Steinbrenner wrote:
^ Well, Keiko wouldn't be stuck...all indications are that if they hadn't reversed the effect, she would continue to age normally from that point. In which case I guess she and Miles would wait until her physical body was old enough before they got 'romantic' again.
True she wasn't stuck as a child but by "stuck" I meant stuck as a child who had to re-age into an adult. For all they knew this was going to be the case until the magic wand, er, transporter solution was devised at the end of the episode.