I feel quite conflicted about this one. I was really loving the story, the mystery, the style, the ambiance. I thought the narrator was adorable and her husband seemed like quite a nice guy. And the ending was great too, with the cousins and the bermuda triangle of the aunts' house basically imploding when a bit too much stress was put on its paradox...
But, this story also relies on one of my least favorite tropes: when a woman sees something no one else does, she clearly must be mad. It reminds me of movies like Gaslight and all the unpleasant stories I read in my literature class entitled "Women and Madness". It really frustrates me that a seemingly nice and loving husband will suddenly and irrevocably lose faith in his wife and build a wall between them, even though he was completely forewarned that something strange may happen. It also frustrates me that as a result of her husband's reaction, in that moment the narrator loses all of her courage, and self-confidence. And apparently her mother fared even worse, to the point of losing her health and will to live. Sorry for the soapbox, I know that this is an older story, but this sort of characterization still really upsets me even when I try to put it in its context.