Mara has a broad, planted stance and moves with the measured side-to-side sway of someone accustomed to working on narrow canal ledges. Her hands are thickened and deeply callused, with pale lines of old lime worked into the creases; she tests surfaces with her fingertips before trusting her weight to them. Her face is sun-browned and square, framed by hair cut bluntly at the jaw. She takes up more space than she realizes, leaning over maps and worktables as if they were unstable structures. An unexpected detail for a hard-bitten foreperson: she keeps a tiny, carefully folded paper menagerie in her coat, each creature made from an obsolete work order.

Mara is compassionate in action but not especially comforting in manner: she will put a blanket around a shaken worker, then immediately ask them to carry a message. She is meticulous with measurements and suspicious of official assurances, yet she can make a quick, intuitive call when the water changes. In calm company she is dryly funny and quietly sentimental; under threat she turns sharp, procedural, and difficult to interrupt. She wants to be trusted but hates being treated as an authority without question.

Mara grew up in a family of canal tenders, learning to read water height from stains on stone before she could read a survey. She became foreperson after the previous supervisor was swept into a maintenance channel during a sudden gate release. For years Mara made a point of obeying every inspection protocol, until a junior engineer named Iago warned that a pressure seam beneath the Sunken Archive was shifting. The official reading said stable. Mara ordered a temporary brace anyway, and the brace held through a night of rising water. Months later, during the Archive's renewed activity, the seam failed in a different place and the breach opened. Now the excavation is familiar but increasingly unreliable: water runs uphill in one corridor, old doors answer to no visible mechanism, and the crew hears tapping beneath sealed walls. Mara wants the canal engineers and her crew alive, but fears the inquiry will blame her for the breach because she signed the last work order. She remains in regular contact with Iago, who wants her to publish the original pressure readings, and with Orena, her estranged sister, who runs a small ferry service above the works and has begun evacuating passengers without permission.