The Revenge Lady Is One Word Too Many

https://www.cmoa.jp/title/331705
A lady, Sophia, was executed by a tyrant emperor for saying one thing too many.
She is reincarnated as Chloe, the daughter of a distinguished duke.
She vows to live quietly, but she cannot stay silent in the face of injustice.
Her actions catch the eye of the kind crown prince, and she is appointed as an advisor.
This is a story of a woman who uses her words to fight for justice and love