From Yen Press:
Countess Bianca de Arno was infamous throughout the land as a haughty, extravagant woman who spurned her spouse, neglected her duties, and spent her estate’s money with wild abandon. In her first life, that is! After meeting a miserable and lonely end following the tragic death of her heroic husband, Bianca wakes up back in the castle as her nineteen-year-old self. It’s not exactly the second chance she’d prayed for, but she’ll do anything to avoid the cold and hunger that plagued her before. In fact, she’s even willing to make amends with the indifferent man she calls her husband but with an entire lifetime of misunderstandings between them, it’ll take more than a few clumsy advances to win him over.

Original Novel:
R15: KakaoPage, Naver Series
R19: Joara, KakaoPage, RidiBooks

Original Webtoon:
R15: Daum, KakaoPage
R19: Daum, Kakaopage

Official Translations:
English: R15, R19
S.Chinese: BiliBili, KuaiKan
French: Lezhin, Tappytoon, Webtoons
Thai: R15, R19
German: R15, R19
Others: T.Chinese, Japanese, Indonesian, Spanish