Minthara needs to be recruitable in both act 1 results, especially as her storyline is about opposing the absolute, reclaiming her identity and finding out who she can be. As she already is suitable for good parties and has content approving of 'good' choices in Acts 2&3, she is not an evil party only.
She NEEDS to be changed to be recruitable for people who side with the druids, just have her escape at the end of the fight and then nothing else changes from her storyline, she is already someone you break out of an absolute prison so her returning in failure because you defeated her, yeah that works BETTER than the current story.
And locking recruiting her out of having Karlach, Wyll and Halsin? that's just removing reason to replay the game. Also datamining shows she has dialogue with Karlach! so they made content then arbitrarily restricted it!
You can have Min plus Karlach and Wyll. You just go to the mountain / act 2 without completing the goblins vs grove quest for either side.
Of course, then there's no Dammon to help Karlach
