"He doesn't care for me much," she says between swings. "Likely, because he really doesn't seem to care for you, and I've been told I inherited several of your mannerisms. But he's smart enough to realize I have real potential. Potential that I was going to use with—"

Leia sidesteps to avoid catching her arm on his blade, "—or without his help. Better that I know how to do things properly than hazarding guesses of debatable educational merit."

Something he likely saw during the weeks he spent with Luke. Her brother couldn't be faulted for the leaps he was forced to make while learning how to be a Jedi, but there was no denying that he went about some things in ways the Jedi in this time period didn't. Either because he simply didn't know or there hadn't been enough time for Yoda to finish teaching it to him. His best guess was as good as it got.