"I wish I didn't know that I was marching my sisters into a boiling pot of trouble cooking in Oakland..." Eleven-year-old Delphine is like a mother to her two younger sisters, Vonetta and Fern. She's had to be, ever since their mother, Cecile, left them seven years ago for a radical new life in California. But when the sisters arrive from Brooklyn to spend the summer with their mother in Oakland, Cecile is nothing like...