Thank you, Crimsonrider, for lobbying on Minthara's behalf. She is one of my faves. It seems her content was unfinished when it came time for Larian to press the gold master, so to speak. They could have removed her companion content and just left her as a boss villain like the other two goblin bosses. Instead, they included the unfinished content they had.
On the one hand, I'm glad we're able to enjoy what content there is. On the other hand, Minthara's potential as a character is woefully unfulfilled. With the complexity of her story background, she could easily have a rich, deep companion plot line on a par with one of the origin characters. In her current state, she does not.
Under those circumstances, it may have been best for Larian to keep her companion content out of the release and save it for a BG3 "expanded edition", taking the time and care to make her a full-fledged party companion. She certainly deserves some TLC and the royal (noble?) treatment. I hope Larian finishes what's clearly a half-finished job and brings back her VA to build an expanded role for her. Considering her vast, loyal fanbase (of which I count myself a member) and the half-baked, buggy nature of her current incarnation, it would be awfully nice for Larian to just release a BG3 "Minthara Edition" as a free download. You yourself have certainly earned it. With all of the time you've put into finding and reporting Minthara bugs, Larian really ought to pay you as some kind of part time QA contractor. You're practically doing one of their employee's jobs for free.