Okay!
This has been bothering me terribly.
People are saying how Sakura is on her way to kill Sasuke, and is going to die first instant, all that.
1. Sakura is a medical ninja. She can't just rush into battle, as she has been trained, she must stay on the side and avoid being hurt in order to stay alive so she can heal anyone who is injured. Why would she just barge in and attack Sasuke?
2. She doesn't want to kill him, Shikamaru came to her saying he was pulling a team together to stop Akatsuki, and Sasuke. Intending that they will kill him if needed to keep a war from breaking out between villages. So, why would she go after Sasuke herself if she knew what Shikamaru was doing? She obviously has other motives, and only needs Kiba to sense Sasuke out.
3. It has just been basically shouted in all of our faces that she still deeply cares for Sasuke, and was probably going to go after him herself no matter what Naruto said. She doesn't want him dead, she just doesn't want Naruto to suffer anymore. The manga is beginning to repeat it self, in a different way. The one to stop Sasuke's curse mark from taking over in the chuunin exams was...SAKURA![tra la la~] She has an important role whether you guys like it or not. The only way she would die is if it would be, in my opinion also stating this as a theory, would be if Madara killed her, making both Naruto and Sasuke very angry--since they have always been particularly protective of her--and defeating him together.
Why Madara would kill her, is based on an apparently popular theory that Madara wants Karin to remove Sasuke's eyes, for some reason that I don't remember, but what people don't seem to remember is that Karin isn't a trained medical ninja, she just has the ability to give people her chakra when they bite her arm. Which Madara knows, he also probably knows of Sakura's abilities as a skilled medical ninja.
So unless he wants Sasuke to die when his eyes were removed--which I don't think since he still needs him--then he needs Sakura to do it. But, she would refuse[I think so at least] which would result in her death. Even as a Sakura fan, I don't believe she could defeat Madara, and it would take Naruto and Sasuke together.
But still, this is my opinion. If I got anything wrong, I'm sorry. I'm very tired, and this was a lot of typing for 2:30 a.m. ...