Lawyer Virginia Pearson said her client had a significant alcohol problem, which had affected her judgment. She was trying to get help for her addiction.
Judge Ian Mill said Inwood was an intelligent woman with little previous history of offending but who "grappled with alcoholism".
"It's very sad it has come to this ... it's quite clear when you are sober you are quite a different person ... it could have been quite serious. It was a serious assault in public. Essentially, you had no cause to hit him. I doubt you would have done it if you were sober."
Along with the seven-month jail term, Inwood is subject to six months' post-release conditions to attend drug and alcohol counselling or a residential programme as directed by her probation officer.