She is immune to it apparently. Plus she has no REAL temptations to join the dark side at all. (The whole throne scene in TLJ with Kylo trying to persuade her to join had me roll my eyes. She JUST MET THIS GUY, had a “moment”, even though the day before he murdered his dad and is part of the space nazi army that has attacked her several times. That proposal was suppose to be tempting?)
… I could talk about how did completely you missed the point of Rey’s arc in TLJ and how did you not paid attention to the movie at all.
But laying out opinions about the previous film and discussing it merits or shortcomings in a fanedit suggestion thread of a different film is unnecessary and derails the thread, there are countless threads for that already.
Not following something of the previous movie because in the opinion of someone “it doesn’t make sense” or “doesn’t work” is how we got the mess that was TROS in the first place.
The dialogue of @RogueLeader with her being tempted by the darkside, follows well her character and makes sense in the context of the previous movie.