Danna-sama, Imayo wa Shindara Yurushimasen

Elaine, who was executed for trying to escape an unwanted marriage, has returned five years into the past. In this life, to survive, she marries the cold and merciless border count, Walt, who is feared by all. But what will happen next...?

Original Webtoon
https://mechacomic.jp/books/202874