She was left with a broken nose, two front teeth knocked out and a swollen, bloodied face after thugs threw a brick at her head.
Why? Because her father asked them to stop kicking a football at his van.
Little Jersey-Lou Perry was left unconscious with shards of glass in her face after a gang of up to 15 yobs attacked her father's van in Grimsby.
As he began to drive off one thug jumped out from behind a wall and threw a brick through the window, which struck his daughter in the face.
The brick hit her so hard it knocked out her two front teeth and broke her nose.
Her devastated father Kyle Perry, 23, said: 'I can not believe that someone could do this to a child - who throws a house brick at an innocent little girl?
'The coward who has done this to my little girl has to hand themselves in to the police.
'He could have killed her.'
Recalling the incident, Mr Perry said: 'Jersey-Lou, my partner and my other daughter were with me in the van - they were strapped into the passenger seats.
'I had pulled over when a group of lads started kicking a ball up against the door.
'It was scaring the girls so I got out and told them to pack it in because I had young kids inside.
'A group of about 12 to 15 of them started to walk towards me. I got back in the van and was going to drive away.
'I started driving off and a guy who had been hiding behind a wall jumped out and threw something.
'I heard glass smashing and looked over to see if everyone was all right.
'That's when I saw Jersey-Lou had been hit. She was out cold and there was blood everywhere.'
Mr Perry drove straight to the Diana, Princess Of Wales Hospital, in Grimsby, where his injured daughter was kept in overnight for observation.
She was treated for a broken nose, two broken front teeth, and dozens of cuts and bruises - but the long-term effects of her injuries will not be known until she has been seen by a bone specialist next week. Not to mention the emotional trauma she will have suffered.
Her mother, Laura Mussell, 22, said: 'It's incredible to think anyone could live with themselves for doing such a thing to an innocent little girl.
'Her injuries have gone down a bit now, but only the other day her dad pulled out another piece of glass from her cheek.
Police have described the male who threw the brick as between 16 and 19 years old, about 5ft 6in and of a stocky build with dark hair.
A Humberside Police spokesman said: 'We are appealing for anyone with information to come and talk to us anonymously. This is a particularly nasty incident and we would obviously welcome public assistance.'
Anyone with information should call Humberside Police on 0845 6060222, quoting log 427 of April 14, or call Crimestoppers on 0800 555111.