This exquisitely acted woman's film, which debuted on Showtime, stacks the deck against the heroine's superficial mother. But it's still a superior example of the co-dependency soap opera. After his father's suicide eight years ago, adolescent Lonnie Bravard (Emile Hirsch) became the prime weapon in the ongoing psychological war between his alcoholic mother, Iris (Laura Linney), and his flighty grandmother, Min (Gena Rowlands). Lacking a strong male authority figure, Lonnie has too much time to wonder whether he might have played some part in his father's despair, and the feuding Iris and Min are too busy tossing recriminations at each other to comfort him. Iris, who...