Though as any Sakura fan, I was also disappointed when she said she would leave everything to Naruto and Sasuke. I would be please if she flat out stated she had a goal too, because we can only speculate for now. That's alright of course, it's fiction after all, but I don't even know if Kishi has thought of her like this.
This is the problem, Naruto desires peace to the world, Sasuke still an incognite, Sakura does not have an objective of her own, wanting to protect someome is not a personal objective, is not a reason to fight, example of this is Naruto himself, "i wont let you kill any of my friends" one of his friends die, then he wavers, if Sakura does not have an objective of her own, then she would feel the same as Naruto when Naruto and Sasuke fight with each other, she cant protect both of them when they are fighting.
Also to help Naruto, everyone is helping him so i dont think it's her dream, i wish Kishimoto could specify this, helping Naruto to achieve his dreams would be a good start.