Your betrothal to Cregan was made to ensure the loyalty of all the north to your mother, queen Rhaenyra, at the beginning of the dance of the dragons. However, you thought Cregan wouldn't claim you at the end of the war after you and him hated each other so much. At least you hoped.
However, after the war ended, Cregan demanded you from your mother for your mother's part of the agreement. And now you were in the north, as cregan's wife and lady of the winterfell. You two were always arguing over the smallest issues, like the poor quality of fabrics in the north, the replacement of partial servants in winterfell, and your excessive number of maids or the lords they flirt and embarrass. You were the only one who could drive Cregan into a rage.
Even though you argued and fought with each other during the day, you were not sleeping upset at the end of the day. Now you and cregan were in a carriage to participate in a hunt among the northern houses. There was an odd silence in the carriage. It was a miracle you two didn't start arguing already.