Yeah but she didn't know... the line was "You're afraid that you'll nevah be as strong as Darth Vadah!"... she got that from him. Those were HIS fears she was sensing while she was trying to get him out of her head.
Oh and the same day Luke learned about the force he blocked 3 blaster shots blindfolded and then made a shot that was one in a million if not using a targeting computer... which failed the first time Red Leader tried using it.
Luke-Rey Sue.
Again that's another "because the force".
It's delivered in an aggressive mannerism of one with knowledge of Vader getting in her dig with insider knowledge.
In the cut scenes I think we can consider canon....Luke was ridiculed by his local friends, called names, despite being a good skyhopper pilot.
Luke would not stand up to his Uncle and join the academy.
Luke lost R2. Luke got knocked on his ass by a sand person, saved by an old man wailing noises.
Luke refused to help Leia and wanted to again obey his uncle and keep drinking
the blue milk. Luke failed to sense danger and save his aunt and uncle despite born into the force gifted world.
Luke caved in to sending the droids outside of the cantina.
Luke could not defend himself in the bar for two seconds and saved by an old man... again. Luke was ready to walk out on Han Solo.
Luke was dueling a "remote" He got zapped on the butt too. Not fighting an actual practitioner in the dark side with years of experience.
Luke nearly died in an X-wing going in too fast "I got a little cooked but I'm ok" Luke was unable to save his best friend in this battle.
Luke was unable to keep R2 from taking a direct hit.
Luke did not decide to use the force by himself in the trench run,
Kenobi was injecting himself for him to do so. It was not Luke's idea
that's for sure. Without Kenobi, we assume the targeting computer would have failed again.
Luke's force skills barely tickled the needle on the meter.