The reason that I mention this is that the self-same old stick in the mud who's sick with nostalgia for an idealized past that any major dude will tell you wasn't nearly as fun, pleasant or magical as her yearning for a time where she wasn't on the spot all the time made it has the temerity to lecture her less rigid parents about the need to adapt. It's a lot like watching Deanna simper that she deserved better than cohabitation turn right around and tell her mother that she would settle for it just to punish her for getting away with not obeying DADDY!!!!!
In both cases, we're dealing with a narrow-minded idiot with a martyrdom complex and a need to make people "play fair" by obeying her every stupid whim irritate her mother by posing as being more liberal than she actually is. The problem is that Marian and Mira never twigged to the fact that their children are far more reactionary than they could ever have hoped to be.