Amanda Na is the older sister of Noirah Na, though neither knew the other. She had been a padawan before the Clone Wars, but before it started her master's vessel was shot down. She believed that because it had taken so long to become an apprentice in the first place that she would be sent to the AgriCorps.
So instead she set off on her own, the Jedi Order believing her dead. During the Clone Wars she found herself on board the Regal Diathim as a passenger.
When pirates attacked the vessel and one of the gunners was incapacitated, she took his turret. She did so well, due to the Force, that Kayla Shepherd, the captain of the vessel, hired her.