Pack Up the Moon follows the intertwined journeys of Josh and Lauren as they grapple with grief, loss, and love. Through their experiences, the novel underscores the profound impact of human connections in helping individuals cope with life’s most challenging moments. In the novel, interpersonal connections facilitate healing, growth, and resilience in the face of tragedy.

Lauren’s relationship with Josh is central to her ability to cope with her illness. Her unwavering love and connection with her husband allow Lauren to face her impending death with grace and courage. Josh’s presence at her side during her final moments provides a sense of comfort and reassurance that allows Lauren to accept her fate before disappearing into the light. Her connection with Josh transcends death, as she continues to communicate with him through letters and signs from the Great Beyond, which Gertie the medium helps Josh see; these means allow Lauren to guide Josh toward healing through their eternal love—another thematic focus of the novel. 

On his grief-stricken journey, Josh’s interactions with Lauren (through letters, memories, and dreams), Sarah, Radley, and family help him navigate the complexities of grief. Lauren strives to teach Josh the healing power of human connection in her tasks, like hosting a dinner party—“[L]et them come into our home and be part of your life, honey.