A woman attacked another Parklife festival reveller with a drinks bottle in a row over queue jumping.
Kyleshia Kinight-Greig has been spared jail so she can try to rebuild her career caring for the elderly.
The 30-year-old appeared for sentencing at Manchester Minshull Street Crown Court after pleading guilty to actual bodily harm on June 9, 2019, at the festival in Heaton Park.
Mother-of-two Knight-Greig, of Wythenshawe, hit her victim Shannon Williams in the face with the bottle, cutting her above the eye, after she was challenged about 'pushing in the queue'.
Anthony Longworth, prosecuting, said the argument began when Knight-Greig tried to join her friend who was further advanced in the queue before Ms Williams complained about her behaviour.
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He said: "She and her friend were pushing their way through the crowd to get into Parklife. Miss Knight-Greig said she wanted to go ahead to join her friend.
"An argument with the victim ensued with pushing and shoving involved. But she hit her victim in the face with a bottle, causing lacerations above her right eye."
The court heard that the blow did not cause the bottle to break.
Judge Bernadette Baxter heard that Knight-Greig had grown up in care and suffered post-traumatic stress disorder (PTSD) as a result of a prior violent relationship.
Rachel White, defending, said her client had been suspended from her job working for Equilibrium Care as a result of the case.
Sentencing Knight Greig to a 12-month community order in which she must complete 20 days' rehabilitation and continue to engage with her local women's aid centre, Judge Baxter said the confrontation with Ms Williams 'quickly escalated from verbal aggression to physical aggression'.
"You caused her to have a cut above her eye," said Judge Baxter. "But you didn't admit that straight away.
"You took it all the way to trial and then pleaded guilty at the trial. You knew, having been a victim of violence yourself, how pernicious its effects can have on the victim."
Knight-Greig, of Yarmouth Drive, was given credit by the judge for having no previous convictions for violence and not having committed offences in the two-and-a-half years since the attack. The court heard how Knight-Greig, a single mother, was also studying towards a degree in care.
Judge Baxter said the community order was 'not a soft option' and went on to say: "I have no control over whether they [her employers] keep you on in your job.
"My hope is that this [the community order] enables you to continue working and studying. But that is a matter for your employer and your student body.
"But it is regrettable that you haven't found the strength to be open and honest about this incident."