What is the theme in Marriage a la Mode by Katherine Mansfield?

Another theme is "change and transformation". Although by the time the story opens up, Isabel has already changed into this new "shallow, tinkling, vain" creature, the theme of change and transformation is still important to "Marriage á la Mode." Isabel's transformation is what has brought the current state of misery to William's life. Instead of surrounding herself with family, Isabel chooses to immerse herself in a host of friends as shallow as herself. Further, Isabel's change reflects the drive towards the modern and away from anything that speaks of the traditional or old-fashioned.