It turns out good guys can rescue Baldur's Gate 3's evil playthrough companion mod-free by turning her into a sheep and making the sheep stand trial

pcgamer.com:

Drow Paladin Minthara seems like a cool character, even if she placed dead last in PC Gamer's Baldur's gate 3 companion ranking. To recruit her, you have to betray most of act one's questgivers and friendly NPCs to help a bunch of stinky goblins instead, and this route also sees you waving goodbye to companions Karlach, Wyll, Halsin, and possibly Gale.

There's already mods for recruiting Minthara without being heinous, but a Taiwanese gamer with the handle pao870111 figured out a way to do so in vanilla Baldur's Gate 3, subsequently shared in English to Reddit by ZookeepergameDeep360. Fair warning: it's a jank juggling act of epic proportions, and very much not what Larian intended.

You start by attacking Minthara first in the Kill the Goblin Leaders quest for Halsin, which makes her only «Temporarily Hostile» in Baldur's Gate 3's game logic. Using nonlethal attacks to knock her unconscious isn't really recognized by the story, but it does mean that Minthara will show up at her old spot in the goblin camp after your next long rest and remain there indefinitely (though you can't talk to her). After finishing the Goblin Leaders quest in this way, it looks like you can progress through act one and into act two as normal, being sure to unlock the Moonrise Towers waypoint.

Here's where it gets weird: you then return to Minthara at the goblin camp, use the Polymorph spell to turn her into a sheep, and then the Dominate Animal spell to temporarily add her to your party. Taking control of Sheepthara, you then have to teleport straight to the Moonrise Towers waypoint.

What follows seems to be the most arduous part of the whole ordeal: Minthara has to reach Ketheric Thorm's throne room to trigger her normal trial scene from an