Mara walked with the spool in her pocket and found that she could not keep her hands from smoothing coats and tucking stray hems. The thread did small miracles: a jacket’s sleeve was rehabilitated enough to avoid the bin; a seam in a child’s stuffed animal was closed with stitches that did not look perfect but felt right. Each repair seemed to carry a ripple: a laugh regained, a story remembered, a neighbor who said thank you as if the language of ordinary courtesies had been newly discovered.