There are far more logical issues here:

(1) Why does Minthara even consider sleeping with you? As far as I know Drow are a supremacist bunch who wipe out lesser races, not get lovey-dovey with them 😅
(2) Even Viconia in BG2 rejected Elves(!), Halflings, Dwarves and half Orcs. And she was said to have completely broken with her culture. And she still told you you are beneath her.
(3) And in Viconia's case it took a *long* time for her to open up.