Deila was a Human woman, belonging to the Young group on Melida/Daan, and identified as female. She lived during the same time as Nield and [Cerasi], and participated in the conflict known as the Young–Elders War. Following the Elders' loss, Deila was appointed to the Young Security Squad within the new administration, where she acted as second-in-command to the Jedi Obi-Wan Kenobi.
After Nield banished Jedi Kenobi, Deila had no choice but to permit Mawat to acquire weapons from the Young's armory because Nield had given the order. Nevertheless, after discovering from Joli that Mawat intended to seize control of the city of Zehava for his own purposes, Joli and Deila went into hiding before giving Jinn and Kenobi information. They informed the Jedi about Mawat's treachery.
Subsequently, when Obi-Wan and Nield engaged Mawat and his forces in combat, Delia, Joli, and Roenni arrived to provide assistance in the battle. They, along with Nield's people, were summoned to join the fight against Mawat. However, this confrontation was brought to a halt by Cerasi's message, which was delivered via a hologram that they had created prior to her passing. Everyone was deeply moved by her words, leading them to collectively lay down their weapons.