After the Rain — Norma Fox Mazer

At fifteen, Rachel is a worrier. She worries about whether her family understands her, whether her friends like her, and whether she'll get her first kiss before she turns sixteen. And she worries about whether she can handlehaving a real boyfriend if he does come along.

But it takes a dying old man -- her grandfather -- who has never been easy for anyone to handle, to show Rachel she has very special abilities. With love and compassion, she reaches the heart of an old tyrant who has always been unreachable. And in so doing, she comes to a better understanding of her family, her friends, and herself.