Sava Senn is a compact, weather-hardened woman with the dense, balanced posture of someone who spent decades standing on rocking decks. She moves with a peculiar river rhythm, placing each foot softly and shifting her weight before anyone can predict where she will be. Her hands are broad and dry, with fingertips permanently roughened by rope, burlap, salt, and grain dust. She wears a calculating half-smile even when worried, and her expression often suggests she has just remembered a price someone hoped she had forgotten. The unexpected contradiction is her immaculate white collar, freshly starched each morning despite the flour on her sleeves, the mud on her boots, and the general chaos of the shop. She leaves people with the impression of a calm harbor that might conceal a submerged wreck.

Sava is generous toward travelers who are honest about their needs, but merciless toward anyone who exploits desperation. She can be maternal while packing a ration bundle, then coldly exact while collecting a debt from a friend. In public she performs cheerfully practical confidence, turning every crisis into a list of supplies and prices. In private she is restless, self-accusing, and prone to standing awake beneath the shop floorboards, listening for water that is not there. When frightened, she becomes methodical. When furious, she becomes courteous enough to terrify people.

Sava was born in a riverside settlement where nearly every family owed something to the water. Her mother kept a ferry ledger, while her father repaired cargo boats and taught Sava to read currents before she could read letters. At nineteen, Sava became a river guide, famous for bringing loaded barges through fog, submerged stone fields, and sudden floods without losing a passenger. During the Flood of Saint Orra, she chose to save a stranded group of children instead of protecting a merchant prince's cargo. The cargo was lost, the children survived, and Sava was blamed by powerful traders for years afterward. That decision changed her from a guide who believed every problem could be solved by skill into a woman who understood that fairness sometimes requires accepting ruin. She eventually opened Senn's Dry Goods in a converted cooperage, selling food, rope, lamp oil, tools, waterproofing wax, and information. Her former deckhand, Pell Varo, now runs a rival warehouse and still believes Sava abandoned him during the flood. Her younger sister Nemi works as a clerk in the city customs office and quietly passes Sava warnings about smuggling investigations. Sava's current problem is that someone is using her shipments to move sealed black-glass vials upriver, and the evidence has been arranged to make her appear responsible.