“Head up, Addi,” Brooke says as Addi’s head slumps backward like a ragdoll.
Brooke tickles her neck. Addi pulls her head erect, eyes wide, smiling at Brooke.
“Oh, Addi,” Brooke says.
At 3 years old, Brooke is eight months younger than her best friend, 4-year-old Addi. But it’s Brooke who takes the lead, holding Addi’s hand as they coast down a slide, guiding her onto the school bus or coaxing her to use her walker.