Why 4 stories were excluded from Country of the Pointed Firs

The great Library of America edition of Sarah Orne Jewett's works includes four stories that are part of the Dunnel Landing series, i.e., further stories about a writer who spends the summer on the coast of Maine and tells us of the lives of the people, in some ways antique and isolated but in other ways a tight community w/ many complex relationships and inter-relationships over the decades; the people are independent and resolute, but often reticent and quick to judge; many are lonely and eager to tell their stories, in a taciturn and indirect manner, to a visitor. It's as if the writer - never explicitly named as SOJ - came to the coastal town to work on a project but found her subject matter inadvertently. In any event, the 4 additional stories were never included in the collection Country of the Pointed Firs, at least during SOJ's lifetime, and their exclusion shows I think her exquisite judgement - not that any of these stories are weak or poorly written, but each in its way would tip the balance of the delicate collection, or perhaps we should call it a novel. The Queen's Twin, about a woman in the community who is obsessed w/ and fixated on Queen Victoria, is amusing but would focuses too much on events in London and would have worked against the sense of isolation and independence that Pointed Firs establishes. Similarly, The Foreigner, though a fine story about how the village reacts to a woman from the Indies who marries a local ship captain and is widowed - again, this story would draw too much energy away from the isolation of lives on the coast of Maine. Two other stories not included could have fit into the story well, both of which concern the narrator's landlady's taciturn brother, a bachelor of about 50 years, and his delicate courtship and ultimately marriage to a woman on a nearby farm. If these stories had been included, Pointed Firs would end on a sweet, comic note of happiness and resolution, and part of the beauty of the novel as it is comes from the sorrowful and unexpected conclusion as the narrator leaves the village behind and heads on w/ her life as a writer, while the villagers hardly look back.