Improvement

"One of our most gifted writers of fiction returns with a bold and piercing novel about a young single mother living in Harlem, her eccentric aunt, and the decisions they make that have unexpected implications for the world around them. Reyna knows her relationship with Boyd isn't perfect, yet she sees him through a three-month stint at Riker's Island, their bond growing tighter. Kiki, now settled in the East Village after a youth that took her to Turkey and other far- off places--and loves--around the world, admires her niece's spirit but worries that motherhood to four-year-old Oliver might…