At the end of the final matinee of Lin-Manuel Miranda’s hit musical, which was interrupted several times by standing ovations for every principal actor, most of the performers were in tears. Lightfoot brought her whole family to this last performance and told the Tribune at intermission that she had seen the show “at least five times.” She took the stage at the curtain call to thank the company and praise a score that she said “had resonated in living rooms, kitchens and cars,” presumably including her own.