I mean, imagine I play a Very Evil Drow, who worships Lolth and all. I walk in the Grove, I'm desperate for a healer. I'd certainly tell people "I saved your skin" and "I'm not your typical Drow, I'm not a danger to you", if those options are available to me. Of course, after finding out that there's no cure in the Grove, if my Drow joins with Minthara, well, I will have lied. I'm Very Evil after all. My Very Evil Drow might find it quite advantageous to have access to both dialogues options.
If they were to open all tags in this way I would like if the game acknowledged the change in motivation. Like in Planescape: Torment. You could choose the same dialogue option but a truth or lie tag. If you went around lying most of the time your alignment shifted towards Chaotic if you always told the truth towards Law.
So
[truth] I'm here to help the grove
[lie] I'm here to help the grove
Perhaps come up with better tags than [lie] like subterfuge or some such.
To @Leurotta's point I do think the Seldarine / Lolth is division in the lore but, so far, the Duegar pantheon doesn't include a good god like Drow pantheon does. So this is case where Larian got the lore (mostly) correct. There are Elistraee worshiping drow living in the high forest and silver marches. But for some reason the game doesn't treat Seldarine drow as surface dwellers, instead they are assumed to have come from the underdark.
