Help

So it'sa Korean manhwa , mc is a princess , she tot she fallen in love with a normal person,I believe, but turns out it was a prince from some other nation, the prince is very nice to hear tho, she had to marry tat prince and can't return to her homeland, and she hated the prince , treating her husband very badly, but after the husband died she kinda regretted how she treated him or something, and when time turned back she tried to make things right