North Seattle vs. North Seattle

Last December, Dani Shapiro reviewed "Poser," Claire Dederer's memoir of regaining her life through yoga, for the New York Times's Sunday Book Review. I have not read the book but plan to if only to tease out for myself what is tongue-in-cheek and what is earnest. For instance, this paragraph (from Shapiro's review; italics mine):

“We were a generation of hollow-eyed women, chasing virtue,” she tells us. “We, the mothers of North Seattle, were consumed with trying to do everything right.” North Seattle — a first cousin of Park Slope, the Upper West Side, Berkeley and dozens of other such enclaves around the country — was a place where attachment parenting was all the rage. Kids weren’t weaned until they spoke in full sentences. Families all slept in the same bed; ate the same organic, locally produced food; and lived in an enriching environment safe from the dangers of plastic toys and disposable diapers.
Is Dederer making fun of the idea that all mothers in one section of a city could be monolithic? Or is she subscribing to that very idea? Furthermore, is Shapiro echoing Dederer when she lumps North Seattle in with other stereotyped areas - or is this her own take on the situation? The word "affluence" never appears in this paragraph. But it doesn't have to.

Homonyms are words that look and sound the same but have different meanings. The phenomenon I want a name for today is the sense of dislocation one feels when one encounters an unexpected homonym; North Seattle, in the quotation from the book and in the review, is that for me. The North Seattle I know does encompass the wide-stroller-wielding, latte-sipping women of Dederer's Green Lake. But it also includes the mom headed to the new DSHS offices at North Seattle Community College for food or work assistance and the women, some mothers themselves, caring for a gaggle of preschoolers, many of whom have mothers who must go to work, at Lake City library's story time.

Satirical or earnest, my hope for "Poser" is that it doesn't commit the sin of omission, of erasing those other mothers of North Seattle. I'll report back after I've read the book.