I know, right?
Anyway guys, for the first time I actually agree on something with SS fans [no intent of bashing!]
So, if you remember, back in Part 1, Sakura was the first one who anticipated what Sasuke was about to do, she knew he wanted to leave to Orochimaru, yadda yadda.
And now she has the same face when Juugo and Sai question his intentions..only that without the low-self esteem expression...
I believe she knows or somehow suspects what he is about to do/his goals, etc.
I agree she might know. Thou not sure if she knows more than Naruto.
Last chapter both of them ( Naruto and Sasuke) were looking at each other with suspecting eyes.
That's why assuming Tsunade kept a part of Katsuyu with her, and Orochimaru reveals Sasuke's plan then sakura could find out.
There's a thing regarding Sasuke.
Itachi knew him best and then Naruto and Sakura afterward. Kakashi knows him aswell pretty good but not sure if he knows Sasuke better than Sakura.
So in part 1 the ones who could've guessed what Sasuke was planning would have been:
Itachi > Sakura > Naruto
but right now
Itachi may have yet again implanted the idea of becoming a Hokage in Sasuke, and knew that it will contradict with Naruto. But Naruto may not be able ( because of the 3 way deadlock) to defeat Sasuke alone, and here comes Sakura.
But SS fans are kinda correct. She does suspect something.