Ms. Hilty, sitting in the dressing room of her character, Ivy, that she tricked out to match her own past ones, laughed heartily over the casting of her Broadway idol, Bernadette Peters, as Ivy’s mother. A subplot involving Ivy sleeping with a major player on the Monroe musical also reminded Ms. Hilty of the usual backstage gossip. “The Broadway community is a tight little dysfunctional family — dysfunctional because it’s a family that has sex with each other,” Ms. Hilty said. [x]