Nina is Maura's partner and Amie’s sister. She is a media editor who struggles with the feeling of powerlessness brought about by the strings, especially regarding Maura's short string. Despite this, she shows strength and bravery, committing fully to her relationship with Maura. Nina’s profession allows her to offer insight into the media's role in shaping public discourse about the strings, adding depth to her character.

Amie is Nina’s younger sister and a fifth-grade teacher in Manhattan. She chooses not to open her box, which sets her apart and highlights her unique perspective on the challenges faced by others. Amie’s choice to remain unaware of her string length adds complexity to her views on fate and choice, influencing her relationship with Ben and her personal growth throughout the novel.