Nah, she will survive. I see two scenarios, or she struggles with the fight with Shin but when he's ready to make his final move to kill Sakura, Sasuke appears out of nowhere and saves Sakura. Or Sakura just beats the living sh*t out of Shin and his clones like the boss A$$ ****** she is and when the "rescue team" arrives Sakura as already tidied up the place.