Kaste almost didn't become a Jedi. She was talented - make no doubt, a prodigal warrior, but her betters were worried she only sought glory. That she didn't understand the Jedi code. But she was chosen by an old master who was willing to give her a chance. He wanted to calm her. She wanted to prove herself. She got her wish. A trench on Koros Major. Sith lightning through her veins. Her Master's lightsaber in her hands. The Temple moved from Ossus to Coruscant. She returned to a home she didn't recognize. A war hero. She was 19. A Jedi Knight.
She didn't want glory anymore. She was tired. She stopped crusading. Started teaching. Oversaw younglings. Visited planets the Sith had ruined. She found the Jedi code in hollow eyes, in devastated villages, not in her lightsabers. In the howl of wind around an empty battlefield.
She took her first padawan when she was 30. A boy from Ossus. He'd been left there after his parents died to the Sith. He never forgave them. She taught him how. She outlived him. She does most of her padawans. She teaches them, urges them to see the Jedi as peacekeepers, not warriors. Some do, some don't. All she asks is that they are given a chance, same as her.