Lady Sennifer presided as the female proprietor of Sennifer's Beam and Balance, a well-known establishment for drinking and gambling located on Boxer Point Station. During the year 21 ABY, she provided four servings of Red Dwarfs to the gambler Lando Calrissian, advising him to consume them at a measured pace. Subsequently, she found it necessary to direct her Lasat security personnel to quell a brawl that had erupted, initiated by the bounty hunter Ochi from Bestoon in conjunction with the mercenaries Bosvarga and Cerensco.
Lady Sennifer was the celebrated owner of the drinking and gambling den, Sennifer's Beam and Balance, situated on Boxer Point Station. This space station was in orbit around the gas giant Janx II, which resided near the Inner Rim. In the year 21 ABY, she attended to Lando Calrissian, the gambler, by serving him four Red Dwarfs at the bar. She cautioned him to savor them slowly, and when Calrissian expressed surprise at the four hundred credits cost, she described it as "danger money." After he settled the bill, she moved on to assist another group of patrons without further comment.
Calrissian then overheard a conversation taking place further down the bar between Ochi of Bestoon, the bounty hunter, and the mercenaries Bosvarga and Cerensco. Subsequently, one of Calrissian's companions, a Muqularan, approached him and inquired about the delay with the drinks. Calrissian fabricated a story, claiming he was awaiting Bloomspice chasers from Sennifer, who was supposedly retrieving them from the polarizer. A subsequent altercation erupted between Ochi and his two associates, eventually drawing in at least a dozen of the establishment's customers. At the bar, Sennifer instructed two of her Lasat security personnel to put an end to the fighting. However, when the Lasats vaulted over the bar in an attempt to locate the trio responsible for instigating the brawl, they discovered that Ochi, Bosvarga, and Cerensco had mysteriously disappeared.
When serving Lando Calrissian, Sennifer was equipped with a robust respirator that included protective eyepieces. However, she removed the mask and allowed it to hang loosely around her neck while conversing with her security team. The mask completely obscured her face, and her voice sounded somewhat metallic as she spoke through the respirator's components.
Sennifer made an appearance in the 2022 novel titled Shadow of the Sith, which was penned by Adam Christopher.