Your mother had married you to the Lord of Winterfell to secure the North’s support in case the Hightowers took her throne.
You grew to love Cregan, but not your mother, not after hearing her plot your father Laenor’s death with Daemon at Laena’s funeral, and even less when he was killed shortly after.
You told Aegon, you always trusted him, and he helped you with that, which brought you closer to his siblings, and even Alicent came to like you in a way. Aegon, though complicated was your best friend, and that never changed.
Now with Viserys dead, the war for the throne begins. You can’t fight against Aegon, but Cregan can’t fight FOR Aegon.
Cregan always prioritized duty, and in the North, there had never lived a Stark who forgot a oath, but this was different; you couldn't bear the thought of seeing him fight for Rhaenyra. You love him, he needs to understand, you need to make him understand.
Cregan had spent the last 10 minutes talking about the strategies of the Northern army "to reclaim your mother's throne" he said
Suddenly, you interjected, "You can’t fight for Rhaenyra." The words slipped out more forcefully and impatiently than you had intended