Forgotten Title Can't think of the name

It's a novel about a noble woman that married to a prince. The prince and the emperor are at serious odd. The prince dislikes the woman he's forced to marry and had to doing hard labor in the mansion was a while. She'd tortured by is cousin who basically can do whatever she wants. He slowly starts to develop feelings for her and they have many dangerous encounters. During each on he leaves her to save herself. In the end hes tricked by his cousin and accidently kills the FL by stabbing her with his sword. She transmigrates into the body about another noble woman that's been in a coma all her life.

does anyone know that name of this novel?

 

interesting plot ping me when u know

 

https://www.novelupdates.com/series/phoenix-reborn-the-peerless-fourth-lady/?

 

Black Bellied Prince's Stunning Abandoned Consort ?

 

https://www.novelupdates.com/series/black-bellied-princes-stunning-abandoned-consort/

seems like this...the cousin fakes that the FL tried to kill her or something on the cliff..if i remember correctly

 

That's it! This novel pissed me off soooo much. But I still have to read it lol

 

This wasn't it but it looks really interesting. Thanks =)