Responses
Manga or manhwa?
If it's a manhwa, it's probably this one
https://www.mangago.me/read-manga/i_became_the_daughter_in_law_of_the_villain_because_i_m_terminally_ill/
beta
It's a manga I think recarnation basically she does the same things like the male lead doed in order survive like for example she bets on a horse that the male lead bets on knowing it will win cause she read the book and he thinks she and him are destined to be together.