Exeter Crown Court
The 17-year-old Barnstaple girl was given a year's community order after admitting inflicting actual bodily harm upon 51-year-old Oliver Hebden, who has chronic asthma and uses a walking stick.
Exeter Crown Court heard that the girl and her group of friends swore at Mr Hebden and shouted insults, including calling him a "cripple", before she launched her attack and stopped him from calling the police.
Judge Ian Leeming QC told the girl he had been intending to jail her for a long time until he learned of the progress she had made in turning her life around since the incident.
The court heard Mr Hebden had also accepted a letter of apology from the girl, who cannot be identified because of her age.
Prosecutor Michael Brabin said the victim was walking home near a subway on the Roundswell estate, just after midnight on May 16 this year.
The victim was approached by a gang who shouted abuse, before the girl stopped him from walking away.
"He was frightened," said Mr Brabin.
"He got onto his phone to call police. As he was doing that, he was hit in the back by this defendant.
"He was asked if he was calling police and he felt he couldn't continue it so he stopped.
"Then his walking stick was thrown into the hedge and the defendant threw his mobile phone into a hedge."
Mr Brabin said: "He was then hit repeatedly by the defendant. He fell to the floor, out of breath. With a lack of walking stick, he couldn't get up.
"He lay on the path for ten minutes, then he started to crawl to his home. He couldn't get back up but he managed to get to his house."
Mr Hebden did not suffer serious injures but was bruised and bleeding.
The drunken girl had to be handcuffed to the police car upon arrest, while banging her head and threatening them.
She has three previous convictions including being drunk and disorderly and is already serving a community order for assault.
Defence counsel Lee Bremridge said the girl was remorseful and was now a hard-working student who was getting help to stay out of trouble.
"She has grown up in a family that has known nothing except having benefits," said Mr Bremridge, adding that his client was determined to pursue education and find a job.
He said she had a difficult background, having grown up with a drug addict father.
The judge told her: "The facts and circumstances of this offence are truly disgraceful, as you understand. The victim is seriously disabled. He had the grave misfortune to come across you."