Is John Updike's characterization of Queenie in"A & P" flat or round?

In John Updike's short story, "A & P," Queenie (as
Sammy perceives her to be) comes into the grocery store where he works, with two
friends, dressed in bathing suits. At the time this story was written (and even still in
some places today), this was unsuitable attire in public locations like stores and
restaurants, for example. This detail becomes the source of conflict between Sammy and
his manager when his boss chastises the girls for their inappropriate
attire.

To decide whether "Queenie" is a flat or round
character, it is best to check the definition. Dr. L. Kip Wheeler's site on "Literary
Terms and Definitions" defines these two terms:

readability="7.7400722021661">

E. M. Forster describes characters
as " href="http://web.cn.edu/kwheeler/lit_terms_F.html#flat_character_anchor">flat"
(i.e., built around a single idea or quality and unchanging over the course of the
narrative) or " href="http://web.cn.edu/kwheeler/lit_terms_R.html#round_character_anchor">round"
(complex in temperament and motivation; drawn with subtlety; capable of growth and
change during the course of the
narrative)

Wheeler goes on to
provide more specific detail:

readability="12">

A round character
is depicted with such psychological depth and detail that he or she seems like a "real"
person.

Also called a static
character, a flat character is a simplified
character who does not change or alter his or her personality over the course of a
narrative, or one without extensive personality and
characterization.

Studying
these two definitions, it seems clear that Queenie's character is
flat. She comes into the story and mesmerizes Sammy as she shops,
but the reader does not know what she is thinking or whether she is
as confident as Sammy perceives her to be. In fact, all of the
information we get about Queenie comes through his adolescent
viewpoint.

Poised on the edge of passage into the world of
the adult—ready to leave childhood behind—Sammy thinks she is a
goddess, but her character, in actuality, has no depth at all. Her presence is simply
the catalyst for Sammy's change in how he perceives the world and his place in
it.