The red-hair is Diamond, you can just meet her for the moment but that's it.Maybe this one, but I'm not sure. I remember that she looked better
https://f95zone.to/threads/apocalypse-v0-4-1-epiclust.33875/page-69#post-3331841
In any case, I compared your paths 0.3.2/0.4.0/0.4.1. They are all different and implies playing from the beginning. In 2020, only a madman will deal with this, moreover, pay money for it. It makes no sense to spend time on this, just wait for the final release. (google translate)
As for your remark, the game is work in progress. And since it's a sandbox game, this means things will be added that will change any "optimum" paths that zapallbugs is making.
This is perfectly normal, but hey, if you want to wait for the final release because it "inconveniences" you, see you in 2022, buddy.