Smart’s performance lives up to her name: measured and nuanced, both vulnerable and full of rage, depending on which of the handful of characters she’s inhabiting. Her adjustments, under the direction of Sarna Lapine, shift seamlessly from one to the next. Perhaps it’s the clipped cadence of friend Rosalie, or a broadening of the shoulders as she embodies Izzy’s menacing husband. Smart pulls us into the conversation—not an easy task in a 1,000-seat theatre.