Mary Shipstone, was gunned down as she stood next to her mother Lyndsey on the doorstep of her home in Northiam, near Rye, East Sussex, after she returned from school.
Mother and daughter had fled Yasser Alromisse and were given new identities because he was violent and he had been stopped from seeing the child.
Mrs Shipstone had converted to Islam when they married in 2005 but later rejected the faith and left her husband, prompting a bitter custody dispute over Mary.
The seven-year-old had just returned from school and was clutching her new violin when Mr Alromisse killed her.
Alromisse, 46, was hiding in the rear of a silver Toyota on the drive at the £300,000 house when he fired the shots on September 11 2014.
The schoolgirl, who was just days away from celebrating her eighth birthday, was taken to King's
College Hospital in London but later died of her injuries.
Her father had concealed himself in the car by creating a blind from bin bags and was later found in a pool of blood in the rear of the vehicle, where he had shot himself in the head.