HELP

Guys I remember hearing about this one manhwa but I forgot what it was called? It was about this girl who's abusive mother made her get married in order to kill her husband, and if she doesn't kill him, she'll get cursed and die or something like that. Anyways she ends up falling for him and she ends up killing him but she travels back in time and in the second life she like vows to protect her husband this time. If it helps I think the female lead had blonde hair or light hair but I could be wrong.