Francesco (Frank) Baldassarre was bludgeoned to death by his wife, Antoinetta Baldassarre, who was sentenced to 15 years in prison.

STATEN ISLAND, N.Y. -- Three weeks ago, Antoinetta Baldassarre pleaded guilty to first-degree manslaughter, admitting she bludgeoned her 80-year-old husband to death three years ago in their Tompkinsville home.

She was promised a 15-year prison sentence in return.

But Baldassarre, who had needed some convincing to take the plea offer, apparently isn't happy about it.

"You're not fair," Baldassarre told Justice William E. Garnett on Tuesday at her sentencing in state Supreme Court, St. George.

"Ten, not 15," the short white-haired defendant, a native of Italy, said referring to the amount of time behind bars she believes she deserves for slaying her spouse Francesco (Frank) Baldassarre on Oct. 7, 2014.

Prosecutors alleged she also committed arson by trying to burn herself to death the next morning inside a car in her garage.

Garnett reminded the defendant she had knowingly and willingly pleaded guilty to manslaughter with the understanding she'd be sentenced to 15 years.

As neither defense lawyer Mario F. Gallucci nor Assistant District Attorney Tuesday Muller-Mondi opposed the promised prison term being imposed, Garnett sentenced Baldassarre to 15 years behind bars and five years' post release supervision.

No family members were present.

"This is a very sad and unfortunate case," Gallucci said outside court. "The plea with the prosecutor took into consideration her story that she suffered years of both physical and mental abuse at the hands of her husband, and that on this one day, unfortunately, she had enough. Today closes that story, that sad story."

In pleading guilty earlier this month, Baldassarre admitted she intended to seriously injure the victim and caused his death by striking him multiple times on his head and body with a crowbar in their Victory Boulevard residence.

But she contended the act was not premeditated.

"I never thought about it to kill my husband," she said then. "That comes from years of abuse."

In April of last year, Baldassarre had rejected a similar offer to plead guilty to first-degree manslaughter in exchange for a 15-year sentence.

She said then she believed a 10-year sentence was "sufficient."

In a bizarre soliloquy at a subsequent conference, she told Justice Stephen J. Rooney, then presiding over the case, she did not want to go to trial because she would "have a very short life left" if she testified.

"You will have to put me somewhere where they won't find me," she said.

Baldassarre underwent several mental-competency examinations over the course of the proceedings, and was ultimately found fit to stand trial.

During the prior plea hearing, Muller-Mondi said the 15-year offer was based on her consideration of all the facts in the case and was in the interest of justice.

The prosecutor did not mention anything about Baldassarre's alleged claims of abuse.

In a statement issued afterward, District Attorney Michael E. McMahon said the plea would hold Baldassarre accountable "for the violent and brutal crime she committed."

"We hope that this disposition can give some peace and closure to the victim's remaining family," said McMahon.