Actually, eytanz, I agree with you in this case. I don't think this story wrapped up well enough; it needed to either be shorter or much longer. (And the longer version would have just ended up veering toward "Flat Diane," which already won all those prizes forever and ever the end.) It was long enough that it lost the hard punch of the ending/title mashup, but it was too short to really let us get involved in the character's dilemma. We ended up with a large dose of awkward half-showing (in which she 'shows' her power by telling us about times she used it) and then quickly bringing up the mailman news story and trying to rush the ending. I got restless and a little bored while listening. Moreso than just the usual ADD kicking in, I mean.
However, I maintain that the proper phrasing should not be "feels like part of a larger story/work/world," which is awesome, and should instead be "feels unfinished," which is not.
(And I think the cracks on the ceiling were just there to help set the mood. I agree that the description of them went on a little too long for them to be so completely irrelevant to anything.)