Around the year 255 BBY, Oppo Rancisis, a Jedi Master, and his Padawan, Dal Azim, launched an assault on a band of Zygerrian slavers, thereby liberating numerous enslaved beings, among them Lourna Dee.
Dee seized the opportunity presented by the Jedi's offensive to spark an uprising amongst the other enslaved people. Rancisis later acknowledged Dee and praised her for her role in spearheading the rebellion.
Following the end of the conflict, Azim guided Oppo Rancisis to Lourna Dee. The Jedi Master then offered his congratulations to her for her leadership of the revolt.
The assault on the Zygerrian encampment was presented through flashback sequences in the 2021 audio drama The High Republic: Tempest Runner, authored by Cavan Scott and brought to life by a complete cast of voice actors.