She was so orderly, so well balanced, one stitch of her hand-sewed organdy collar was so clearly identical with every other, her very seams, if you can understand it, ran so exactly where they should, that she set me to pulling myself straight.
This is the description of Miss Emily, a spinster, sole survivor of her family, who has insisted on renting her home out for the summer for far less than it is worth to the narrator. Miss Emily’s crisp, fine cotton collar on her dark dress was a common look for a basic dress in the early 20th century, and often came with matching cuffs. The hand stitching tells you she either has skill or once had money.
As the story progresses, mysterious things happen in the rented house at night. Does this house hold a secret about Miss Emily? This is from Mary Roberts Rinehart story titled The Confession. It was first published in 1917 as a serial in a magazine, and then republished with another story in 1921 in novel form.
Rinehart uses fashion to signal who people are so far as age, taste, and class. Although in this case Miss Emily seems to be not quite as orderly as she appears.