Okay “ideally”, Sunset’s EqG-world self shows up, SciTwi gets with her after a massive montage showing them doing happy friendly stuff (like, beyond Starlight-tier) and Sunset goes back to Equestria with Twilight, Sunset’s all sad and whatever but Twilight assures her that “it has to be done”, and to commemorate Sunset’s feats in the EqG world she gets a statue saying “Sunset Shimmer, savior of humans” and they all live happily ever after.
||I do actually prefer the idea of SciTwi being with EqG-world Sunset, even though she doesn’t exist yet. ||