In the family room, Rachel and Odie kneel together on the rug, a wooden mancala board on the coffee table between them. “Your turn,” Rachel prompts. “Remember your strategy.” She points to a single shiny stone on Odie’s side, but Odie can’t resist the allure of the biggest pile at the end. She scoops the flat marbles up and doles them out one by one, landing nowhere useful. “That’s okay. You still cleared a place.”

