Many people on Reddit also want Minthara to become a companion.
https://www.reddit.com/r/BaldursGate3/comments/j81vjo/romance_with_minthara_in_baldurs_gate_3/

kink with her
https://www.reddit.com/r/BaldursGat...only_one_who_wants_minthara_to_crush_my/


Baldur's Gate 3: Minthara is the Best Romance Option
https://gamerant.com/baldurs-gate-3-romance-options-best-minthara/

"While there still isn't a ton of information available yet about Minthara's backstory and what drove her to pursue a path of evil, the parallels between her and other conflicted characters like the Yennefer from the Witcher series are apparent. Of course, Minthara is clearly evil enough to condone mass murder, but there are sure to be plenty of players who will be interested to see if she will get a redemption arc, or if she has some tragic past. Obviously, some characters are just plain evil and offer no reasoning for choosing darkness, but that may appeal to some players too."


This is what I wrote about too. I think she has the potential to surprise the player. Show her good side if we become close to her - the ability for friendship, love, self-sacrifice and all that. But it must be difficult to achieve. In Lolth drow society you always expect to get a knife in the back, trusting someone is difficult.