Hi sorry looking for a specific manwha (trigger warning)

I can't seem to post question so:
A woman and a duke get married. Her brother relinquishes all nobility and titles as soon as they exchange vows. The Duke is mad because he wasted money and did not get a title and the woman is blamed for his loss.

The Duke ignores the woman and soon she falls into a deep depression.

TRIGGER WARNING


she then commits die and then wakes as her husband.

What manwha is it? I know more about it but i don't want to spoil. I forgot the manwha name