The quote highlights the anxiety and paranoia that can arise when someone feels they are being deceitful or have a secret to protect. The character is acutely aware that excess details can lead to their downfall, as it often does for criminals. This awareness demonstrates a struggle between the desire to maintain a façade and the risk of exposure that comes with sharing too much information.

In "Can You Keep a Secret?" by Sophie Kinsella, this sentiment reflects the central theme of the narrative, where characters navigate the complexities of truth and secrecy. The internal conflict of wanting to trust others while fearing the consequences of their secrets underscores the comedic and often chaotic nature of the storyline.