ENID BLYTON - The Naughtiest Girl Helps A Friend

In Enid Blyton's bestselling school series Elizabeth Allen is sent away to boarding school and makes up her mind to be the naughtiest pupil there's ever been.
 
 
 
In book six, the school goes camping and the Naughtiest Girl means to be well-behaved. But horrible Arabella is sleeping in the very same tent and busy stirring up trouble for Elizabeth's best friend, Joan ...