Sleepwalking in Daylight by Elizabeth Flock
Once defined by her career and independence, stay-at-home mom Samantha Friedman finds that her days have been reduced to errands, car pools and suburban gossip. What was an easy decision for Sam years ago has become a nagging awareness that this life was her choice. Now she deals with a husband who shows up for dinner but is too preoccupied for conversation, and a daughter swathed in black clothing and Goth makeup who won't talk at all.
Believing she's an adopted mistake, seventeen-year-old Cammy has fallen into sex and drugs and pours herself into a journal filled with poetry and pain. On parallel paths, mother and daughter indulge in desperate, furtive escapism--for Sam, a heady affair with her supposed soul mate, fueled by clandestine coffee dates and the desire to feel something; for Cammy, a secretive search for her birth mother punctuated by pills, pot and the need to feel absolutely nothing.