“It was the last night of her training. She had the makings of a great Jedi…but Leia believed that she must serve the galaxy without a sword, like her mother once did. She surrendered her saber to me and said that one day it would be picked up again…by someone who would finish her journey.”

I think it’s important to say that Leia was a capable student at least, since she’s shown defeating Luke in the scene. If the dialogue suggests that she was a reluctant student, it would probably show her being less aggressive in her fighting.

JEDIT: Wording.