While many viewers probably did not notice this almost-subliminal tidbit, it has a heavy meaning. It represents the Beldam imprinting Coraline’s forever – even if she was apparently defeated.

In fact, was the Beldam truly defeated? Was Coraline actually manipulated by the cat? Was throwing the key to her psyche down that well a good move? Can the Beldam now “trigger” Coraline back into her world whenever she needs to? Like in other MK-themed movies (such as Labyrinth), while the final scene of the movie appears to be a celebration, the celebration is dampened by creepy little details that hint that all might not be “well and good”.