Not sure if its ok to post info here, but googling "Baldur's Gate 3 Unlocked Console Fearless" should point you in the right direction. But yeah, i basically tricked the game into thinking both act 1 "endings" were completed at the same time, so she was alive in act 2, despite be killing her in act 1.
I wouldn't recommend doing this as a serious playthrough, as things get really wonky with story progression later on, with matters unrelated to Minthara. I was just testing to see how her character recruitment would work and i didn't want to redo act 1 in a evil way... lol
But it really fits, if we get some sort of dialogue option to spare Minthara instead of killing her in act 1, her act 2 dialogue BARELY requires any edits at all.
As for the developers being shocked, maybe i missed something in the Early Access period, but i feel they prioritized Companions that really don't have much of a fanbase?
I mean, i barely have come across people who think Wyll or Gale are interesting companions, even Lae'zel doesn't seems that popular in forums, reddit, twitch streams or such.
Halsin... most seem to only know him because of the "bear sex" scene, but i have not met ANYONE yet that romanced him.