I see. I thought you were implying Minthara said that in-game. I don’t think she would care if the other nobles questioned her. She would, however, care if her child was to be harmed. In which case, she has stated that she would kill anyone who got in her way. And if she were to rule over Menzoberranzan, she would definitely try to reshape the rules or customs there.
I personally don’t like the Menzoberranzan ending for her as it’s much better for her to start anew and leave that (toxic) life behind, but that is a matter of preferences.
Well, I think it's impossible to reshape whole society until there will be objective reasons to develop. If we will try to dream about it I can say that Minthara could push rights for her possible half-drow offspring but nothing more and still he/she will be an outcast in this society because racism is a part of worshiping Lolth. If we speak about competetive god to Lolth - it will be Vhaeraun (god of drow males, thievery, territory, shadow magic, spellfilchers, and evil activities on the surface, aimed to further drow goals, interests, and power there) nothing will change except that this god attracts drow who want equal rights in gender part of society - overthrow matriarchy. This god is still about conquer and domination of drow over "lower" races.
Hah, this is toxic life only from modern human morale actually for them it could be perfect life to be honest, sadly we cant ask them about it.
It’s not so much overriding as evolving lol. Clearly her world view gets challenged when she starts travelling with you.
Well, no. Later in the game she will call Orin "iblith" ('offal', 'excrement') - that is super racist insult to any race except surface elves (there is different insult) in drow language. In my opinion her racism stops at your non-drow character and companions because her gratitude and yours usefulness/love interest to you.