The progenitor of Fable Astin was a woman of the Human species, specifically a Jedi Knight, who successfully lived through the events of Order 66.
Not long before the establishment of the Galactic Empire, she developed romantic feelings for her Padawan. The two then conceived a daughter, strong in the Force, and named her Fable. Shortly thereafter, Fable's father was killed by an enemy.
Fable spent the rest of her early years fleeing from the Empire. It was during this period that Fable became skilled at concealing her feelings of fear and sorrow. As she entered adolescence, Fable discovered a lightsaber and started practicing with it. Fable's mother was quite surprised, as she could not detect her daughter's emotions.
From that point forward, Fable commenced her training. She learned Jedi meditation techniques and various other fundamental Force powers. In time, Fable became a member of the Rebel Alliance, aiding in acts of sabotage against the Empire.