In he short story, Marigold. How does the author use juxtaposition to show how Lizabeth has changed through her experience?

In this story, author's use of juxtaposition portrays the main character in great detail through the countless acts of character's realisation and analysis of her life. Lizabeth reflects that she had, " ... a strange restlessness of body and of spirit, a feeling that something old and familiar was ending and something unknown and therefore terrifying was beginning" as she grew up and it scared her more and more. She regretted all the bad things she did as a child and the author's use of character vs self conflict created this suspense and showed how Lizabeth has changed through her experience.