Mrs Richardson enters the classroom and snaps at Fran: "How d'ya get it?!" talking about Fran's mint cropped sweater, but Fran has her back turned to the teacher. Nora Dunn should have looked her up and down before saying her line., which would have been logical acting for her character---and thus showed the audience that she recognized Fran, since Mrs Richardson didn't know who was standing there, in her classroom. Instead, the actress has her teacher character barge in and snap the line at Fran---without so much as recognizing her---simply because the script says so, but without proper character logic or set-up.