Social media comments about her son, which were repeated by the victim moments before the incident, led to Jessica Louise Snaith's "most unsavoury" attack.

Albury Local Court on Tuesday heard Jessica Louise Snaith had confronted the woman in the SS&A Club toilet in the early hours of June 28.

"Come visit me at my house, we have a farm and guns and I'll shoot you," she told the victim.

The victim had been making serious allegations about Snaith's son online.

Snaith said if she repeated the claim again, "I'll flog your f---ing head in", and when the woman repeated the claim she flogged her.

Snaith pushed her off the chair, grabbed a fist full of her hair, and pulled the victim's friend's hair and punched her as she intervened.

Security became involved and both were kicked out of the venue.

The 37-year-old was arrested the next day.

"During the interview (the) accused made full admissions to the assault and was in no way remorseful for her actions," police said.

"The accused claimed in the interview that her actions against the victim were justified."

Magistrate Miranda Moody said she had behaved like a child.

IN OTHER NEWS:

"That's not what we expect by professional members of our community," she said.

Snaith has been a registered nurse for 14 years and works with patients with brain injuries, and is aware of the potential consequences of such violence.

The court heard the attack was "completely out of character" and she was being a protective mother.

"Ms Snaith, I can understand why you were upset," the magistrate said, but added that she couldn't behave like that.

The Sandy Creek resident was given a conditional release order without conviction and cried as the matter was finalised.

She is banned from going near the victim's work at West End Plaza or contacting her.