Chica desaparecida / Girl, Missing (Novelas juveniles (+13 años))

The story seemed to take a slight detour before ramping up again. Was that intentional to build suspense or just me?

Her reactions and doubts seemed very authentic, but I'm curious if that was based on real experiences or purely fictional.

The gradual disclosure kept me hooked, but I wonder if the placement of reveals was planned from the start or evolved during writing.