Dude that was chapter 3.Right after Sasuke talked to her,she realized she was wrong,and very soon after she gained/showed more and more respect towards Naruto.We saw that when Naruto was fighting against Kiba,she even spoke out against Sasuke in favor of Naruto in chapter 49.
I'm too lazy to post all the links.
Sakura lied to Naruto about liking him in order to get him to go back to Konoha.She felt that he was over doing it with trying to save Sasuke.Despite having a top teir S-Class terrorist criminal organization after him,Naruto would leave the village in attempts to save Sasuke,thus putting himself at risk.She lied for his sake.
As for the new stuff.I'd rather wait for the explanations,rather than make negative assumptions.She has her reasons to lie to Sarada.