Akuyaku Reijou no Oyome-sama

One day, Carina, a lady who has been groomed to be queen, suddenly has her engagement annulled by her fiancee, the prince. Now he is sending Carina into exile while standing beside her sister, Aurora, instead. Exiled to the far north, where demons are said to dwell, Carina ventures out to investigate the identity of a disturbing sound and has a fateful encounter in the snow…? A predatory love fantasy between a lady sworn to revenge and a strange girl seeking love!

(Source: Comic Seasons, translated)