If you go to the dryad at the circus in Act 3, you’ll get to do the Love Test with her and if you get all the answers right, she can claim that you’re the first to know her heart.
The love test for Minthara is... bizarre.
Saying that she misses picking off her siblings one by one (something she never talked about, at least in my game) gets approval but seems to guarantee the "mildly disappointing" result.
The better choice is saying that she misses Underdark food (despite her previously mentioning being unable to properly enjoy food due to the threat of being poisoned) which also gets approval and allows you to get the "know my heart" result.
Neither "correct" answer seems rooted in her in-game dialogue. She did say that she was happy with life in Menzoberranzan despite the dangers of betrayal, but that's a far cry from relishing fratricide.
Saying that she misses her pet spiders gets disapproval, because spiders are "Lolth's creatures" - which seems odd because she was keeping spiders after Menzoberranzan, as we see in the goblin camp.
The answer to the final question needs to be correct (being captured by the Absolute) to get the best result, and it can even make up for wrong answers to the previous questions (still giving the "know my heart" result), but that makes sense if you've paid any attention at all up to that point.
The best total approval increase while still getting the "know my heart" result seems to be:
1. Spiced Ulaver wine and thinly sliced rothe steak.
2. Me.
3. Let herself be captured by the cult of the Absolute.
I suppose we could explain it away as her not truly having enjoyed fighting her siblings despite laughing it off, and I like that interpretation, but I cringe thinking of the crowd who would mistake it as evidence of being "good". (She isn't. Not in the D&D sense. Not even a little bit.)
