Sakura is pained and deeply shamed by still feeling a bond to Sasuke. She feels ill that maybe Naruto was right and that bond could be remnants of her feelings for Sasuke. (Sakura has always let Naruto's words deeply affect her- we see this even back in part 1) To her that means she failed Naruto. But she knows she loves Naruto, she is certain of that. Her feelings for Naruto is a completely separate part of herself. From Naruto's actions when he rescued her from Sasuke she knows Naruto does still have romantic feelings for her, she's just uncertain if Naruto loves her enough to want to be with her, or does his intense bond to Sasuke top everything else.
Naruto needs to do a confession but it can only happen if he is dying, because otherwise it doesn't seem Naruto can ever believe that sakura can love him! And when did sai scold naruto in chapter 574! He did not scold him at all, I think U r looking into things too much deeply! And what is with Naruto's mental image of introducing his age peers to his mother kushina, he also has an image of hinata over there!
I am unabl to understand what u want to point at in first paragraph! Can u explain!