Socia was born in 58 BBY, aboard the Iridonian trader Vortex to Tal (F) and Serena (M) Sitari, owners and operators of a successful starship repair/parts business. Socia's twin sister, Silene, was born a few minutes later. Socia and Silene grow up in a close and loving family unit, consisting of both blood relatives and the many employees of the family business who were treated as clan/family in the traditional Zabrak manner. Socia was the more outgoing and outspoken twin, while Silene was quieter and more introspective. Socia was drawn to the excitement and romance of space travel, while Silene surrounded herself in the arts. Despite having such disparate interests, the sisters remain close, and were rarely separated for long.