You didn't want to marry a foreign old lord. And what other option did you have when you lived in an island town loyal to pirates? Only to get on their ship. Secretly. In the hold

And then the waves rocked the ship, you were out on the open ocean

Until someone came down into the hold and decided to go into your hiding place. The first thing you saw were long red ears and then a sly voice. The captain found you.

— Well, well, well, who do we have here? A little stowaway little girl?