A short story that unfolds like a novel - Eudora Welty's "Kin"

Last night read only the first part of Eudora Welty's story Kin, in "Collected Stories," one of her last stories, though only from the early 50s - she once again is pushing the boundaries of the story form, it's a story that seems to be paced like a novel but without the back story and narrative depth that we expect of a novel - maybe more like a novella, but if so a short one - making it, what? A very long, even-tempered short story - a genre for which there is literally no market today and which we therefore seldom see any longer. Should withhold overall comment on Kin (one of her few that appeared in The New Yorker), but will note that it establishes an interesting premise: Mississippi-raised young woman returns home to visit her family (various complex first-second and third cousins and great aunt and uncles - impossible for us - and for the protagonist herself - to keep track of) for the first time since childhood. Lots of possibilities to develop here, but suffice it to say that in the first two sections of the story Welty does not do so - only hints at potential tensions and family secrets. The protagonist and her same-age cousin are obligated to go off to visit one of the great uncles, and the aunt has to stay at home for undetermined reasons - health? family history? I might have glossed over the explanation - Welty is a master, or a demon, at putting key info into only a phrase or sentence. One would think that this kind of story would truly examine the clash of cultures - north v south, urban v rural, e.g. - and would explore how two young women have matured in different ways, what it means to leave home (or to stay at home) - though I'm not sure that this is Welty's intention or mileu. She rarely touches on sociopolitical themes, even though she lived through a time of great torment and upheaval. We'll see where she goes with this story. I wonder about her novels - have read none other than the novel-like Optimist's Daughter, but it seems she really wants to unfold things at novel-like pace rather than rush into the action as most story-writers feel (rightly) compelled to do.