Missing May

Why is it that I have become such a big Cynthia Rylant fan, especially loving her Mr. Putter and Tabby series, a series of very short chapter books, and yet I found this book too short?

Missing May is the story of a girl, Summer, who lost her parents and thought she'd never find love again. Then she came to live with Aunt May and Uncle Ob. May and Ob were the embodiment of love. Summer was rapturously happy until one day May collapsed and died while working in her garden.

Ob and Summer were filled with despair. They frantically tried to contact May in the spirit world, but everything they tried failed. It is only with the help from a boy from Summer's school, Cletus, that Ob and Summer begin to heal and find a way to miss May without falling into despondency.