You think that I am not a hunter like you. That I am not a threat. That is what makes me dangerous. You can’t see that I’m killing you. And it won’t either.
One of the things that always really fascinated me about Sakura's character is how manipulative she is.
I was rewatching the anime with my partner because it was their first time, and when Sakura finds Sasuke to beg him not to go to Orochimaru, my partner said that they were a little disappointed that romance was emphasized in that scene over friendship, and I said, "You know, I think Sakura would have told Sasuke she loved him whether she did or didn't. She knows that he cares about her. I think Sakura would say anything she had to to get him to stay."
And the most obvious example of this is when she does that exact thing to Naruto before the Five Kage Summit, lying about having feelings for him in order to save him, and that scene is what I was referencing when I made the comment, but throughout the course of the anime, there are several other moments where Sakura either outright lies and cons or uses her feelings as a weapon to get her way.
She does it right when Team 7 is formed, when Naruto plays the eraser prank on Kakashi. Her inner monologue shows that she thinks it's hilarious, but instead she puts up this facade. She berates Naruto because she thinks it'll make her appear cooler to Sasuke, and she tells Kakashi that she told Naruto not to do it and that she would never do something like that because she wants to portray herself as not only superior to Naruto but as the good one, the innocent one, the one who can do no wrong.
She does it to Sai, Kiba, and Lee when she knocks them unconscious so that she can go kill Sasuke by herself. She does it when tells Sasuke that she wants to join him so that she can get close to him. She does it again when, at the end of the war, she begs Sasuke one last time. She even does it in Sasuke Retsuden when she cons Penjira at cards and reveals that she's been doing the same to Tsunade for years. And these are just off the top of my head, I'm sure there's more.
Basically I'm saying that everyone should consider themselves lucky that Sakura's on Konoha's side because if she was the one with the villain arc? She'd be ruthless.