A woman got into a 'cat fight' with a girl in a pub toilets.
Ashleigh Guest, 19, confronted the 17-year-old in the ladies' at JD Wetherspoons-owned bar, The Reginald Mitchell.
Magistrates at North Staffordshire Justice Centre heard there was a 'cat fight', which saw the victim fall to the ground while Guest continued to punch her.
The incident in Hanley, Stoke-on-Trent, was caused by the accused believing the victim had assaulted her friend and sent messages about it via Snapchat.
Prosecutor Simon Dykes said: "The complainant was at Wetherspoons in Hanley with her friends. She accepts she had a significant amount of alcohol.
"She went to the toilet. All of a sudden, she heard shouting and screaming. She turned around and saw Miss Guest, who was shouting at her in a threatening manner.
"Miss Guest walked up to the complainant and was getting in her face. There was an argument.
"Miss Guest punched the complainant to the head. She fell to the floor. She felt some blows to her head. She tried to defend herself. She said she felt about 10 blows during the incident."
Guest, of Burslem, Staffodshire, pleaded guilty to a charge of assault by beating.
James Hulse, mitigating, said: "This offence shouldn't have happened because a 17-year-old girl should not be in Wetherspoons getting drunk. They are usually hot on Challenge 25, so I don't know how she managed to get served.
"Miss Guest's friend made her aware that the girl who had beaten her up previously was in the pub. Information had been received on Snapchat. Miss Guest went to the toilet to remonstrate with the girl.
"She said there was then a cat fight between them. She accepts she should have stopped once she got the upper hand.
"This would have been suitable to have been dealt with by way of a caution by police."
Mr Hulse said Guest had a difficult childhood during which she spent periods in the care system.
"Her reaction was a protective reaction towards her friend. As a child, she witnessed violence and grew up thinking it was the solution when things got stressful. It is learned behaviour," he added.
"She does not use her setbacks as an excuse. She has two part-time jobs to try and move forward in society."
Magistrates handed Guest a 12-month conditional discharge, meaning she will not be punished if she stays out of trouble for that period.
She must pay £100 compensation to the victim plus £157 in court costs and charges.
