Sheeka Tull's sister was a woman who lived in the galaxy in the later years of the Galactic Republic. Along with their elder sister, Sheeka Tull, they were orphaned during a range war on the astronomical object Atrivis 7 in the Outer Rim Territories. Tull's sister later joined a religious sect on Devon Four but, when the planet was embargoed for not paying taxes, almost died from a plague at the colony until Tull smuggled in medical supplies. Following that incident, the woman moved to a new home and raised a family.
A woman who grew up in the years prior to the outbreak of the Clone Wars was the daughter of Sheevis Tull and younger sister of Sheeka Tull. Sheeka and her sister were orphaned during a range war on Atrivis 7, an astronomical object in the Atrivis sector of the Outer Rim Territories. The sisters later separated when the younger joined a religious sect on Devon Four, a planet whose government ceased paying taxes to the Galactic Republic and was consequently placed under an embargo several years before the Clone Wars.
That almost destroyed the colony when a plague struck the planet; the inability to import medicines from off-world threatened to result in the death of every sect member, including Sheeka's sister. That fate was only averted when Sheeka smuggled medicine onto the planet. Following that incident, Sheeka's sister left the sect and moved elsewhere in the Outer Rim, eventually raising a family with several children.
The woman was religious, as evidenced by their joining a sect on Devon Four. They had strong ties with Sheeka, who broke the law in order to save her sister's life; despite the smuggling later exposing her to danger in the lead up to the Clone Wars, Sheeka never regretted saving her sister.
Sheeka Tull's sister was mentioned in Steven Barnes's 2004 novel The Cestus Deception.