Grandma's Purple Flowers by Adjoa J. Burrowes
The narrator's favorite Grandma lives through the park and down the hill. On the way to visit her, the little girl picks purple flowers -- Grandma's favorite. One day, when the girl knocks on Grandma's door, Grandma moves slowly and is too tired to play. That night, she passes away. Throughout winter, the little girl misses her terribly. But when spring arrives, the sight of purple flowers she and her grandmother planted in the garden makes her smile again.