Down to the Bone (2004)

Winter in hard-scrabble upstate New York. Irene is working class, a mother of two boys, and a user of cocaine. She gets into trouble and checks into a rehab program where she meets Bob, a nurse. After she goes home to her husband and returns to her job as a grocery checker, she stays in touch with Bob and the intimations of an affair begin. By now, she's changed jobs, cleaning houses with her friend Lucy. The temptations of drugs are close at hand. Can she handle sobriety? What about Bob?