Olivia Pratt-Korbel was shot dead at bedtime as she hid behind her mother who opened the door after hearing a commotion.
The nine-year-old died after being blasted in the chest in the Knotty Ash area of Liverpool.
She had been standing behind her mum Cheryl at the foot of the stairs as a gunman opened fire through a gap in the doorway at the front of her home on Monday night.