Villainess manga

[saku_mochi]

So the girl is the villainess and I just remembered the tidbit where she has sway over people high up and foreigners because since she was young she was the one negotiating deals in trade and such. I'm truly sorry I can't think of anything else

 

[Yatsuki]

.

 

[Mysteryota]

Is it a oneshot?
https://mangadex.org/title/41728/though-i-may-be-a-villainess-i-ll-show-you-i-can-obtain-happiness

The 6th story in has villainess that deals in diplomacy since young. Maybe this one?

 

[saku_mochi]

@Mysteryota that's the one thanks~