Have you met with your guard (Darius) from back home and accepted to bring him back to your father domain ? (edit : if not he should appear at some point in the storyline on the iland where you met your father for the first time)
It seem kinda weird to me that you could miss this event considering it is part of the main storyline (or so I think... I'm not sure anymore. I played the update a while ago ^^')
if I remember correctly you get a flashback that will trigger this scene if you talk about what got you to leave your father domain with the Darius