A Green Velvet SecretBy: Vicki Grant Letters from beyond the grave and a green velvet dress reveal a secret about Yardley's beloved grandmother; for fans of The Parker Inheritance and The List of Things That Will Not Change and ages 10 and up. It's always hard to lose a friend, but for Yardley O'Hanlon it's devastating. Her best friend is her wild and wonderful grandmother Gidge. They're two fashionable peas in a quirky little pod. They spend all their time together