The love between a humans and Witch Princesses

In this story, Dorothy will be one of the Witch Queen's daughter. She will be one of Vanessa's older sister.
Her decision of leaving the Forest of Witches was very common, and that's because of a man. Her mother, on the other hand, kept Vanessa in a cage to make she doesn't get out of the place until she was rescued by a man. Following their older sister's footsteps making their mother even more worried and disappointed.
The question is, how did she ended up becoming a captain?

Let's find out more.

I don't own any of these characters except for my OCs. Thank you.