I would definitely say yes, Sakura should interfere. I know many people are think that she would ruin the battle that way, but I strongly disagree. It has been stated a lot of time that Sakura wants to bring Sasuke back together with Naruto. ("Next time we'll do it together", "I'll bring Sasuke back for you(at H&E Bridge", "I'm still here, we'll do it together"(after first encounter with Sasuke), "We'll be together, not only me, but everyone(when she was on the way to Naruto in the war).)
So yeah \( ̄<  ̄)>
sounds reasonable.