A Canberra mother bashed a teen she suspected had sold her son cannabis, a court has heard.
The 16-year-old girl suffered an abrasion to her left eyebrow and a fractured little finger after Leisel Douglas-Major head-butted, slapped and twisted her fingers in May last year.
Douglas-Major, 34, pleaded guilty in the ACT Supreme Court to assault occasioning bodily harm.
She was handed an 18-month good behaviour order at sentencing last month.
The court heard the offender's son had left home and had not been in contact with her when she heard he had allegedly bought cannabis.
She became angry and went to the victim's home with two other women on May 29.
Douglas-Major then assaulted the teen.
The court heard the offender had a minor criminal history and had been assessed as a moderate risk of reoffending.
A pre-sentence report said Douglas-Major had not fully accepted responsibility for the offence, although the defence suggested there had been a misunderstanding with the report's author.
But Justice John Burns said her guilty plea showed a degree of remorse.
The judge accepted the offence had not been premeditated and Douglas-Major had gone to the home in anger without thinking about what she would do upon arrival.
"I take into account that the offence occurred somewhat spontaneously, that there was no great planning involved and it was committed in circumstances where you were under a considerable amount of stress and you became angry as a consequence of being told that your son was purchasing cannabis from the home where the victim lived," the judge said.
Justice Burns ordered Douglas-Major to sign an 18-month good behaviour order.
The sentence – published on the Supreme Court website on Friday – also contained a condition she undergo random drug tests as ordered by ACT Corrective Services.
"It has been submitted on your behalf by [defence lawyer Alyn] Doig that your actions were understandable, and to a certain extent I accept that proposition," Justice Burns said.
"Whilst they may well have been understandable, particularly in the context of the stress that you were under with your family at that time, that doesn't mean that they are excusable.
"There were other ways in which you could have dealt with the situation as you, indeed, have … accepted in your evidence."