Tiarri held the position of one of the spouses of Sha-Mar Ma-dred, the King who governed Kashir.
Prior to the outbreak of the clone wars, Anakin Skywalker, accompanied by his master Obi-Wan Kenobi, journeyed to a conference with King Sha-Mar Ma-dred. As the Jedi approached the monarch, Tiarri stood alongside the other consorts – namely Kheann, Mirrix, and Ashala.
The king's wives departed prior to the commencement of the meeting to attend to their own affairs. Tiarri, while in her bed chamber that evening, noticed an intruder and emitted a scream. This sound alerted the other wives, Kheann and Mirrix, who then subdued Anakin.
Anakin explained to them that his lightsaber had been pilfered. Tiarri then complimented Anakin on his attractive appearance. Following this, Tiarri informed Anakin that Ashala was the one who took his lightsaber.
Before Anakin departed, Tiarri made an attempt to caution him to "exercise caution," but her words were cut short by Mirrix and Kheann.