But it's Posy, Gale's five-year-old sister, who helps the most. She scoots along the bench to Octavia and touches her skin with a tentative finger. “You're green. Are you sick?” “It's a fashion thing, Posy. Like wearing lipstick,” I say. “It's meant to be pretty,” whispers Octavia, and I can see the tears threatening to spill over her lashes. Posy considers this and says matter-of-factly, “I think you'd be pretty in any color.