I started out liking Rey, but by the time TROS ended I couldn't stand her. The novel apparently makes it even worse. She went from a lonely orphan to someone who could do no wrong, and whom everyone worshipped.
I'll never forget the ending, the proud faces of Luke and Leia smiling benevolently on Palpatine's granddaughter while not a single mention of the son and nephew who they neglected.
I really really wish I could forget that ending. I just wish I'd never wasted my money on JJ Abrams's fan film.