Sarah Renea Tarrant and co-accused Raymond Isaac Roff have not entered pleas to charges of murder. Roff is facing additional charges of possessing an unauthorised firearm and not keeping a firearm safely.

The co-accused were arrested after Alois Rez disappeared from a house in Alfred Street, West Dubbo in July last year.

Police believe the father of six met with foul play and continue to search for his body.

Roff, 52, remains in custody. He was led into the court dock in handcuffs for a committal hearing before Magistrate Andrew Eckhold.

Tarrant, 25, has been granted Supreme Court bail. She sat on a chair in front of the dock.

Zonia Rez, the mother of the alleged murder victim, was questioned extensively about the nine-year relationship between her son and Tarrant.

She rejected suggestions Alois had been violent man who had been involved in drug deals and the possession and use of firearms.

The court heard Alois had been associated with the Rebels motorcycle gang at Newcastle before moving to Dubbo.

Zonia Rez was questioned about her personal association with a man "high up" in the Rebels.

Ms Rez said she had no idea what members of the motorcycle gang did.

"It is not my business," she said.

"Females are not involved. Only club members know what goes on."

Ms Rez was unable to answer many of the questions put to her by barrister Ian Nash, repeatedly responding with "I don't know" and "I can't recall".

"There is so much going on in my head right now. I am under a lot of stress and a can't recall a lot of things."

The court heard Tarrant was at Cardiff High School when she met Alois.

Ms Rez said she had a good relationship with her "daughter-in-law" until about six to eight months prior to her son's disappearance.

Ms Rez rejected suggestions Tarrant had been subjected to domestic violence and had taken medication for mental health issues.

Ms Rez said there had been physical violence in the relationship between Tarrant and her son.

"The violence came from Sarah," Ms Rez said.

"She threw things. She chased him up the hall and scratched him. Alois would try and walk away from her and put his hand up when she tried to punch him."

Tarr told the court of apprehended violence orders taken out by police to protect Tarrant.

Ms Rez said she didn't know anything about Alois throwing a remote control at Tarrant and hitting her in the face.

"He punched a wall when he had a toothache and (again) when he had a fight with Sarah," Ms Rez said.

"That was the big fight prior to his disappearance."

Mark Black was called to give evidence later in the day. He had formerly dated the sister of Alois Rez. The men had been close friends and were in the Rebels motorcycle gang together.

He rejected suggestions Alois had a tendency towards violence.

Mr Black said the relationship between Alois and Tarrant had been "pretty rocky".

"Arguments led to minor violent acts on behalf of both parties," he said. "They had a lot of verbal fights. They just got on each other's nerves."