A program note by Corinne Jaber, the playwright who is making her debut with Munich Medea: Happy Family, says that her work is meant to “shine light into places that are difficult to look at” and not “judge nor accuse, but to reveal.” She accomplishes that, but the story line of her fairly static, albeit well-cast, play feels like one we’ve (unfortunately) seen before. At this point, more than 25 years after How I Learned to Drive won the Pulitzer Prize, sexual abuse is no longer a novel subject for the stage.