The Young Intruder — Eleanor Farnes

Alison Vale was a welcome addition to the home of her guardian, Peter Malliner -- welcome to Peter himself and to his brother Douglas who was slowly recovering from an air crash, even, after a time to fussy and fluttery Cousin Priscilla. But to Lydia Peyton, Alison was far from welcome. Lydia intended to become Peter's wife, and she planned to get rid of this obstacle. But she had not bargained for Alison possessing considerable good sense as well as sweetness..