In the spirit of literary criticism, this is the meaning
of your story, which is a parable about physicists. It is true because I say it
is, whether you intended it or not. By writing about it, I will make sure that
everyone thinks of it this way.
Physicists couldn't tolerate the grandiose vision implied
by the many-worlds understanding of quantum mechanics. Retreating from this,
they narrowed their consciousness. This is called "collapse of the wave
function". What happened to the little girl is a metaphor for the
Copenhagen Interpretation.