While I'm collecting footage and documenting all the issues related to Minthara, I wished to take a moment and share a comment by @DaggerPrince from the unlisted video in this post because every person's voice about Minthara is helpful and deserves to be heard;

Originally Posted by DaggerPrince
Hello, i saw your posts on the forums where you linked this video. i dont have an account there and am too lazy to make one. but i wanted to say thank you for fighting for larian to fix Minthara. its insane what they did to her. i really wish they would make her a "real companion" and a "real love interest" one day, but i think they probably never will, probably due to some political reasons. which is very sad. but thank you for fighting for her. for this amazing character. i read many of your suggestions and they were amazing.

Naturally Larian is not doing this for political reasons, it's just their usual MO of not putting enough effort into aspects of the game that do not follow the intended heroic goody two-shoes narrative, as similar issues were happening with Divinity Original Sin 2 too.

That's why Minthara's side is so lackluster and barely worked on since Early Access because as is evident by their statistic 60% of players never even raided the Grove and therefore never even got to experience her as a companion. But we'll keep fighting for her and doing our best to put her on their radar and fix her.