But that's by design, not by happenstance or an effort to mirror Luke's journey. Rey is imbued with the Force for some reason we don't understand yet. She is stronger in the Force innately then Luke was and possibly his equal even now. Everyone keeps trying to jam her character into the traditional dogma of Padawan, Apprentice, Jedi knight, Jedi Master hierarchy but she clearly isn't going down that road and she doesn't understand any of it.
Then it's (judging TFA alone - I will NOT entertain any "Oh, of COURSE it doesn't make sense in the movie - you need to read the novels...and see the other movies....and buy the breakfast cereal...and....either the script works as a film in its own right, or it doesn't) a crap design, because Rey has literally no arc in TFA. None. She goes from self-sufficient, bad mammajamma who can totally take care of herself, out fly, out fight, out technical, and out communicate anyone to...self-sufficient, bad mammajamma who can totally take care of herself, out fly, out fight, out technical, and out communicate anyone...but also has the Force now. Also everyone loves her. Because reasons. That are in this here big 'ol mystery box. That I'm not going to open. That in the most awesome twist of karma, JJ (having left it all hanging with no answers) is now going to have to resolve in a satisfying way. She's got no stakes, risks nothing, loses nothing, and ultimately gains nothing. It's crap writing and wastes Ridley's natural charm and a good performance.
Now, maybe, and I'm really, really hoping, (and I'm SUPER encouraged that the biggest criticism of the film so far seems to be, besides being a bit flabby in the middle...but after 40 years, who of us isn't? is that it's different and unfamiliar) that TLJ redeems that and takes us somewhere interesting, but even if it does, it doesn't change that those were bad writing choices on TFA. It just means a better filmmaker had to find a way to deal with them.