The story girl King family series, book 1.

When young siblings Beverley and Felix come to stay with their aunt, uncle and cousins on beautiful but remote Prince Edward Island, they aren't sure what to expect. Soon, the newly acquainted cousins become fast friends and begin to fill their free time with bouts of fantastical storytelling. A girl named Sara displays a unique genius for this activity and soon becomes the fabled Story Girl whom all the others in the group depend on for a steady...