We don't talk much to ds about I. right now, but we wait for him to bring her up. We never have to wait long, and we never know what we're going to get.
On the preschool playground, ds decided to pretend that the climber was "the ship from Africa," and his friends, knowing about I., happily obliged. Dh later found himself explaining what ship was bringing which Africans, to an aa dad. (ds doesn't want to fly and thinks I. should come on a ship).