All the water in the world

"Maddy is sixteen. She has loyal friends, a mother with whom she's unusually close, a father she's never met, devoted grandparents, and a crush on a boy named Jack. Maddy also has cancer. Deeply curious, wry, and vivacious, she's poised at the outset of adulthood, ready to untangle all the mysteries that living holds--if she survives her teens"--Provided by publisher.