She has trouble killing like in Brawl (though not nearly as bad here), but it's still enough to cost her matchups. Remember the Lucario matchup in Brawl? Still pretty bad for her in this game, but not enough to be a -2 like it was in Brawl. She also has still has trouble with Luigi IMO, and Kirby, another troublesome matchup for her in Brawl, is roughly even according to everyone else in the Smash 4 metagame. Characters with extremely good up-close games can give her a bit of trouble since her jab and tilts don't do a very good job spacing or keeping people off her, especially vs. floaties, when opponents like that can either just DI or nair out of her ftilt or jab.