All three children were together eating apples, and Garstan was taking them to find Cnebba's mother at the end of my last post...
Having Cnebba come back works fine for me. I'll assume that the group came close enough for food to be sniffed and that Cnebba then entered the room, leaving Garstan free to carry on his business with Lin's brother.
Cnebba's playmates, however, might want to join him there in a bit, if that's okay with you and Nogrod.