A woman who headbutted her half brother could remember little of the incident because she was worse for drink, a court heard.
Jody Marchington, 29, admitted assaulting Daniel Lacey on August 21 at an earlier hearing.
John Cooper, prosecuting, said there had been a family party in Dove Holes and a lot of people had gone on to the Shoulder of Mutton in Chapel-en-le-Frith.
Daniel Lacey was one of them and during the course of the evening he had an argument with his half sister Jody Marchington.
In his statement read out in court he said: “I ended up talking to Jody outside. She punched me in the face.”
He said he did not retaliate as she was a girl and his sister: “She headbutted me so I grabbed hold of her hands to stop her head butting me again.”
He said he felt her try and hit him with a glass. “She ended up on the floor and had hold of me around my neck.”
Saul Comish, defending, said: “Miss Marchington was somewhat under the influence of alcohol and therefore has a poor recollection of the actual events of the assault.”
He said the pair had argued earlier in the evening after Mr Lacey had refused to let her use his phone as she had wanted to ring to check on her children.
Mr Comish said alcohol was the clear trigger to the offence and said that since the incident Marchington had sought help and was seeing an alcohol counsellor.
The court heard the children were not living with her at the moment.
Marchington was given a 12-month community order to include a nine week curfew, supervision and an alcohol specified activity requirement.
She was also ordered to pay £200 costs and £100 compensation.
A restraining order was also made preventing Marchington from contacting the complainant for the next three months.