Michael Phillips 
Wild Grows the Heather in Devon (The Secrets of Heathersleigh Hall Book #1) 

Among the rolling hills of Devonshire, England, the Rutherford family leads a privileged life. Charles, a rising star in Parliament, spends his weekdays in London while his wife, Jocelyn, remains with the children at Heathersleigh Hall. But secrets lie within the walls of this country estate–and the mystery about to unravel will change this family forever.