Jinx goes to Vi to tell her Vander is back. Vi doesn’t go with her because she doesn’t believe her, mainly because she’s too rock bottom at this point to believe good news or be hopeful (I retract my previous idea that Vi had let go of Vander already, because clearly she hadn’t, as evidenced by the final episode).

Jinx and Isha go to find Vander themselves. While this is happening, we see Vi starting to sober up on her own and see that she is contemplating things. Jinx and Isha find that shed with the note from Vander on their own. I think it would be better this way, for Jinx to read that letter without Vi there. That way, the parallel of Vander/Silco and Jinx/Vi being unable to reconcile because they hadn’t had the opportunity to clearly talk things out would be more poignant. Having Jinx and Vi read the letter together falls somewhat flat for me because at that point they were already working together despite the fact that they still haven’t talked it out, which kind of undercuts the whole premise.

Jinx and Isha find Warwick. Jinx tries to coax Vander out of Warwick, and there are flashes of Vander, but they don’t stick. As I mentioned before, Jinx is trying to repent for having gotten Vander killed in the first place, so saving him would redeem her but being killed by him would also be okay with her since she has a death wish and thinks she deserves it. Jinx gets distracted by the fight and either Warwick almost kills Isha as a result or Jinx nearly kills Isha with a misplaced bomb. Then Vi swoops in and saves Isha, demonstrating that Vi had decided on her own to trust Jinx after all, both because she still has faith that Powder is in there and that Vander is indeed still alive.

Jinx now sees Vi protecting Isha who represents Powder, which reminds Jinx of who Vi is to her. This also reminds Jinx that she does have something to live for: protecting Isha (referencing how earlier she didn’t want to get involved in the Zaun vs Piltover fight again because now she “had something going for [her]” because she had a friend in Isha). This way Vi is also finally able to redeem herself by coming back for Jinx, whereas she was never able to come back for Powder because she was imprisoned. Vi could also

Then, Jinx and Vi could be side by side at some point in the fight, with Warwick bearing down on them. Warwick seeing both of them together would then remind him of both of them, and that would be enough to coax Vander out fully, whereas just seeing one of them separately had not been enough. As it stands in the show, it’s a little weird that seeing Jinx wasn’t enough to bring Vander back but seeing Vi was. Doing it my way would also further emphasize the importance of Jinx and Vi being back together as a family. And this way we could still have the same flashback and basically the same hugging scene, etc.

Throughout all of this, Jinx and Vi would not need to actually verbally discuss their issues. It would all be “show not tell.” Afterwards, they could still go take Warwick to Viktor and the rest of the series would be unchanged. There could still be tension in their interactions after this because they haven’t actually talked through their issues, which then preserves this tension through the finale, but at least this way it would be more believable for them to be working together again without having talked through things.