The boy, also 14 and from Wiltshire, stalked the girl before attacking her with a 6-inch knife in broad daylight at a shop in Cirencester, Gloucestershire, on 15 March. He admitted wounding with intent, inflicting grievous bodily harm and possession of a bladed article in a public place. Last month, he was sentenced to a three-year restraining order and a one-year referral order.
The girl's mother told the BBC: "If it hadn't been for the shopkeeper and her [own] quick reactions, she would have been dead." She described the attack as "evil" and said it was "disgraceful" that her daughter's attacker was not jailed.
The Ministry of Justice said it was currently "reviewing how the law can better protect victims in the youth courts" to ensure the "punishment fits the offence."