does the ex fiancee get scott free? honestly need some punishment really that actually hurt, being seeing the MC being like this, i doubt he would even hurt her
If she REALLY stick to her declaration that she's willing to give up anything for the kingdom, then I don't see MC getting a win over her frankly.
Maybe he'll get her to beg him for relief, but if that's a price she's been willing to pay then no pain for her.
Since he's of royal blood, whether he stay quiet and protect the frontier or rebel and become the new king, regardless the kingdom and its people remain so she'd be fulfilling her objective.
So it's down to whether she is hypocrite and actually value her pride over her 'duty' or not.