The story started with a girl(possibly teen) and her family on a coastal village. I'm thinking they were like vikings. Red and blonde.
The father sails with Daughter to a trading fair, in my mind it's on an island but it could be another coastal town.
She is kind of a trouble maker, gets into fights. She may have stolen a dagger from a table after a fight. I believe the dagger is very important to the story.
I think she has magic?
There's a fighting ring or a horse ring, not sure why I'm mixing those possibilities into the same scene...
I think the girl is fearless, climbs bluffs, jumps off ledges, makes her dad mad.
And of course there is a boy the dad doesn't approve of. I think...