Braidie is just your average kid. She's a little melodramatic, maybe, and a handful for her mother, but nothing too out of the ordinary. So when she sees her friends cruelly hazing a girl at school, she does what most kids would do - absolutely nothing. Joan MacLeod's sober and gripping one-woman show "The Shape of a Girl," produced by a Canadian company, the Green Thumb Theater, and playing at the Duke on 42nd Street through Jan. 30, adds to the growing consensus in popular culture that "sugar-and-spice and everything nice" might have been overstating the case. In recent years,...