Children of Herne (2009)

Caitlin (Megan Cooper) is a wild thirteen year old, who has ruled the house since the mysterious death of her mother a decade before. Now everything is about to change as, she finds herself suddenly on the move with her father and new young step-mother Fiona, (Emma Fletcher) to the village of Avebury, with its ancient stone circle and secrets that have been hidden for millenniums.