In "Shopgirl," the character Mirabelle copes with the absence of friends by immersing herself in literature and PBS mystery programs. She often turns to nineteenth-century novels that delve into themes of poison and betrayal, engaging with these stories on a deeper level than mere escapism. Instead of approaching them as a lonely reader, Mirabelle possesses a witty and ironic perspective that adds complexity to her experience.

Her enjoyment of these gloomy, period pieces is rooted in her appreciation for their kitschy elements, yet she cannot ignore the darkness that resonates within her own life. This connection underlines her educated demeanor, revealing a layered personality that finds both humor and personal reflection in the somber narratives she explores.