"Marshmallow Walls" is a good introspective story, but not an incredible horror story. It has some chill to it, though not enough to make it stand out.
The voice in this piece, the only aspect of character utilized, is strong enough to carry the story.
There isn't a strong sense of progression.
The setting is mostly white-wallish.
I truly have little else to say about this flash fic out of Fantasy Scroll Mag.