One of the key components in "Star Wars: Knights of the Old Republic II" is the Influence system, where players may gain sway over other characters and, in some cases, train them to become powerful Jedi warriors. The Handmaiden is one of the more elusive characters to work with. She joins your party as a Soldier and, for many players, remains one throughout the game. If you know the steps involved, however, you can transform her into a Jedi Guardian. The Handmaiden will become either a Jedi or a Dark Jedi, depending on what type of character you are playing.
Increase your Influence over the Handmaiden by engaging her in conversation. Consult an Influence Guide to see what dialogue choices will increase your Influence level most (see Resources).
Engage the Handmaiden in dialogue when you see her training in the cargo hold. Convince her to spar with you and win the match. You must have reached at least level 10 to spar with her for the first time.
Put on clothes or armor and speak with her. In the ensuing dialogue, convince her to put clothes on. She will don a Jedi robe. Speak with her about the robe and she will reveal it belonged to her mother, a Jedi.
Win a second sparring match against her. You must have reached at least level 14 to spar with her a second time.
Speak with Kiera. She will reveal more information about the Handmaiden’s Jedi bloodline.
Defeat the Handmaiden in a third sparring match. You must have reached at least level 18 to spar with her a third time.
Discuss the Handmaiden’s mother in the ensuing dialogue. She will choose to follow in her mother’s footsteps and become a Jedi.
You can find the Handmaiden in the Telos Hidden Base; she will join you on the Ebon Hawk after you have completed the area. She will only join your party if you are playing a male character.
Do not talk to Visas before you have made the Handmaiden a Jedi. The Handmaiden may become angry and refuse to speak with you. Speak with Visas only after the Handmaiden has accepted training.
Do not spar with the Handmaiden until you have reached your first planet. A glitch in the game may cause the sparring match to continue forever if you spar with her before this.
After the cutscene in which the Handmaiden chooses to become a Jedi, you may suddenly find yourself stuck on Telos. This is a glitch, as you are supposed to watch a cutscene that takes place on Telos, not transport there yourself. Reload the game and try again.