Final answer:
In the book 'Stepsister,' the glass slipper smashes into glittering pieces, symbolizing the destruction of the fairy tale and representing themes of loss and transformation.
Step-by-step explanation:
In the book 'Stepsister,' the glass slipper smashed into glittering pieces after it was dropped or something else caused it to break. The shattering of the slipper represents the destruction of the fairy tale, as it symbolizes the end of the protagonist's dreams and the demise of the traditional Cinderella story. This event may represent themes of loss, transformation, and the idea that not everything will always go according to the expected narrative. The breaking of the glass slipper adds a twist to the traditional Cinderella story and highlights the harsh realities of life.