The 32-year-old and her 65-year-old father Thomas Martens — a retired FBI agent — appeared in the Davidson County Superior Court in North Carolina on Wednesday.
Currently on bail, the father and daughter face charges of second degree murder and voluntary manslaughter in relation to the death of Mr Corbett, 39.
The Limerick man was found dead in the master bedroom of the home he shared with his wife in Panther Creek, Wallburg, in North Carolina.
Assistant district attorney Greg Brown told the court that he hoped to prosecute the case this year and described the crime as “especially heinous, atrocious, or cruel”.
Permission was granted to the prosecution to allow them to access Mr Martens’ personnel file from his time with the FBI. Lawyers for Ms Martens also requested to subpoena records from social services.
An autopsy found that Mr Corbett died from blunt force trauma to his head, which resulted after being struck by a baseball bat and a paving stone.
Last month, Davidson County Police Department released an audio recording of the call Mr Martens made to emergency services shortly after 3am on August 2, 2015, following the dispute that led to Mr Corbett’s death.
In the call, he is recorded telling the operator that his son-in-law was choking his wife and he thought he may have killed him. “My daughter’s husband, my son-in-law, got in a fight with my daughter. I intervened and I think… he’s in bad shape. We need help... He’s bleeding all over and I may have killed him,” he said.
Mr Martens confirmed to the operator that he hit Mr Corbett in the head with a baseball bat. Mr Martens and his daughter have claimed they were acting in self-defence.
Mr Corbett’s children, Jack, 11, and Sarah, 10, whose mother Mags died from an asthma attack, were placed in the custody of his sister Treacy Lynch and her husband David in Ireland, following a prolonged legal battle with Ms Martens.