What motivated The Twins to seek custody of Zoë after Eve's passing?

The motivation of The Twins to seek custody of Zoë after Eve's passing stems primarily from their belief that Denny was unfit to be her guardian. This belief is rooted in their perception of Denny's ability to provide a stable and nurturing environment following the significant loss their family experienced. They had concerns about his emotional state and whether he could adequately care for Zoë during such a turbulent time.

This choice reflects a deeper theme in the story, where parental fitness and the implications of grief play central roles. The Twins, as family, feel a responsibility to protect Zoë, which they believe justifies their actions in pursuing custody. Their desire is driven by a protective instinct rather than motivations such as financial gain or a desire to relocate her, which implies ulterior or less altruistic motives. The emphasis on believing in Denny's unfitness highlights the complexities of family dynamics and the challenges faced by those left behind in the aftermath of loss.