The Magic Finger

Yoto Says: Dahl gives his female protagonist supernatural powers with which to exact delicious revenge on those who are cruel to animals. Read to great effect by Kate Winslet. 
Every Saturday morning the Greg family goes off to shoot animals and birds. But the girl who lives next door hates hunting.
Now it's made her so angry she's PUT THE MAGIC FINGER ON THEM ALL. And very strange things have begun to happen . . .