I don't think we're going to get a straightforward NS moment after NS recovery in the next chapters, even in flashback. (Possibly at the end though, in a big flashback acknowledging how Naruto has always cared for her.)
Instead, I think maybe NS might be paralleled in a discussion between Sakura and Obito. Him recognizing Rin in Sakura, and Sakura recognizing how you do things and change yourself for the one you love. Something like that.
I think there is a greater chance of a Obi/Rin-Naru/Saku parallel than there is a straight-up NS interaction (in flashback) in the upcoming chapters. I think leaving Sakura (Rin's parallel) with Obito (Naruto's parallel) sets it up. I think it's highly likely now that Naruto has gone back into the fight and left them alone to talk.
Just curious, which would you rather see: An NS flashback of the moment of his recovery, or an Obito/Sakura discussion about love, loss and the future?
Neither. If there was an opportunity, it has passed. Flashbacks have their place but Kishimoto is overly dependent upon them and I don't what to see it used for a scene that could very easily have been done in "real time." I think it's difficult to justify that.
As for Obito/Sakura, I don't want to hear Obito whine about Rin again. He came across as so pathetic that, to me, he has no credibility and I have no interest whatsoever in hearing him talk about the subject as if he some new insight to provide the audience.