Chantelle Marie Spittles, 26, injured the victim leaving a laceration on his arm that received multiple stitches.

She pleaded guilty in Dubbo Local Court to reckless wounding.

Magistrate Andrew Eckhold said it was "tragic" Spittles and her partner thought violence was a normal part of a relationship as he sentenced her to a three-year good behaviour bond.

On the afternoon of October 15 Spittles and her partner were involved in an ongoing argument, court documents show.

About 10pm they had a further argument and Spittles entered the kitchen of their West Dubbo home and obtained a knife.

She clearly showed the victim she was holding the knife.

The victim continued to yell and argue.

Spittles approached the victim who grabbed the arm that held the knife.

The woman put the knife in the other hand and stabbed her partner in his right forearm.

He fled to the front yard and the couple continued to yell at each other, attracting the attention of neighbours who contacted police.

Officers arrived and saw semi-dried blood on the man's arm, clothing and leg, and blood drops on the driveway, path and at the front door.

Police observed the victim had a laceration about one inch in length and about a centimetre wide at its widest.

The victim later received three internal and six external stitches to the wound.

Spittles made full admissions, saying when she had grabbed the knife her intention had been to scare her partner into ending the argument.

She said she did not fear for her safety and no physical altercation had taken place between them.

She said she was experiencing intense frustration over the situation.

In court the defence submitted Spittles had pleaded guilty to a serious offence at the earliest opportunity, even before seeing a brief of evidence. Her solicitor said the victim was a big man and Spittles was "diminutive".

The victim had been in the court with Spittles and it could also be seen from the facts he was supportive, the solicitor said.

The magistrate urged Spittles to rethink her outlook.

"The sad thing is you and your partner think this is a normal part of a relationship," Mr Eckhold said.

"I can tell you it's not, on behalf of the community.

"You have been both a victim and a perpetrator of domestic violence.

". . .What I'm hoping is you and your partner, but you can only be responsible for you, are able to get yourself out of the situation where you think using a knife is the way out of an argument."