Quote classic-rock: If they aged her correctly on this show (which they rarely do) the little tyke should be running around by now. Maybe it's hard to get a one year old (plus a few months) to play the part. Babies are probably easier to control on set and the ages 1-3 are probably the toughest to predict. They can talk then too and you know babies - they say what they want. Can you imagine trying to film a scene and some little girl says I want my mommy or I want my daddy - while Chloe or Billy is holding her. Tough to film around I would say.
Yeah that's a good point.