>your childhood friend becomes a goddess
>divine beings get power from worship, but she's not used to having thousands of people suddenly turn around and bow to her (it's embarrassing)
>she is willing to let you "worship" her so she can maintain her divine power, and little by little gain the confidence for a larger crowd
>but as she sees your tiny form and your devotion flow into her, she's okay with being a "lesser god" for now.