If he were to arrive prior to that decision, his priority would be to take on the Malnosso, not target individual people who happened to be from Konoha.

[And in that, she'd help him in a heartbeat.]

I would tell him about the discussion that he had with Naruto, though, and I would go to speak with him as soon as I found out about his arrival.

[She won't promise to go against him, because she is loyal - to a fault, even. She can agree to reason with him, though.]