Max Ortiz / AP

Sandra Layne, 75, looks over at her husband, Fred Layne, moments after she is sentenced in Oakland County, Mich., Circuit Court on Thursday, April 18.

A 75-year-old Detroit-area woman was sentenced to 22 to 40 years in prison Thursday for shooting her 17-year-old grandson to death last year.

Sandra Layne, of West Bloomfield Township, Mich., was convicted last month of second-degree murder in the death of Jonathan Hoffman, who was shot six times, including twice in the back.

Jurors rejected her claim of self-defense.

Sentencing guidelines called for Layne to be sentenced to 12 to 20 years, but Oakland County Circuit Judge Denise Langford Morris used her discretion to increase the term, pointedly asking Layne several times Thursday, "Why did you keep shooting him?"

In a long sentencing statement, Layne apologized for Jonathan's death but said his parents should have been responsible for him after he began using drugs and became violent.

"I don't want to die in jail or prison," she said, sobbing loudly.

But even Jonathan's mother, Jennifer Hoffman — Layne's own daughter — asked for the maximum possible sentence, telling the court her mother was "pure evil."

She smiled broadly and gave a thumbs-up sign as her mother was sentenced. Afterward, she told reporters that her mother was "a complete narcissist and a liar."

"I wish I had seen signs of how evil she was before I left her with my son," Hoffman said.

Layne's attorney, Jerome Sabbota, said after the hearing that he planned to appeal.

"Look, this is a death sentence for her," he said, according to the Detroit Free Press. "She doesn't deserve to die in prison."

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Todd Mcinturf / The Detroit News via AP

Sandra Layne is shackled after she was convicted Tuesday, March 19, in Pontiac, Mich., of second-degree murder in the shooting death of her grandson last year.

A 75-year-old Michigan woman was convicted of second-degree murder charges Tuesday for shooting her 17-year-old grandson to death last year.

Sandra Layne of West Bloomfield, northwest of Detroit, was held without bond pending a sentencing hearing April 18, NBC station WDIV of Detroit reported.

In addition to the murder charge, Layne was also convicted of possession of a firearm in the commission of a felony in the shooting. Oakland County Prosecutor Jessica Cooper told WDIV that Layne was likely to face 12 to 20 years in prison for the murder conviction, plus two years for the firearms violation.

Jurors were given the option of deciding whether Layne committed first-degree murder, but they chose the lesser charge.

The death of Layne's grandson, Jonathan Hoffman, on May 18, 2012, made national headlines after it was disclosed that he was shot in the chest multiple times as he was calling 911.

Jurors were played audio of the 911 calls, in which Jonathan frantically told a dispatcher that he had been shot by his grandmother and was going to die. Although investigators previously said they found eight entry and exit wounds in his body, prosecutors said Monday during closing arguments that he was actually shot 10 times.

Layne, who took the stand and admitted having shot Jonathan, said she had bought a gun to protect herself because her grandson sometimes brought strangers home late at night to the condominium unit they shared. She said she felt threatened and shot Jonathan in self-defense after he demanded her car and $2,000 so he could leave the state.

Jonathan's parents are divorced, and his father has previously said his son was living with his maternal grandparents while he finished classes at an alternative high school in nearby Farmington.

Jerome Sabota, Layne's attorney, told jurors in closing arguments Monday that Jonathan had a violent temper and that he used synthetic marijuana.

"Think about somebody that's 73 or 74 and this behavior is occurring in her presence," Sabota said. "She was in hysteria. She was afraid and reacted to his physical attack. That's why killed him. That's why she shot."

But Assistant County Prosecutor Paul Walton said in his closing arguments that Layne never complained of injuries and told police when they arrived at the home that she had killed her grandson.

"The first thing that she says to (the police officers) is, 'I murdered my grandson,'" Walton said.

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A 74-year-old woman has been charged with murder after allegedly shooting her grandson in the chest eight times as he called 911.

Jonathan Hoffman, 17, was shot Friday evening at the family's condo in West Bloomfield Township, an upscale Detroit suburb, police said. His grandmother, Sandra Layne, a retired teacher, was charged with open murder and is being held without bond.

During Layne's arraignment Monday, a police detective testified that Hoffman frantically told a 911 dispatcher he had been shot in the chest by his grandmother and that he was going to die.

By the time officers arrived at the property, at least four more shots from a .40-caliber handgun had been pumped into the high school senior.

Read report on ClickOnDetroit.com

A West Bloomfield Township detective told a judge that eight entry and exit wounds were found in Hoffman's body and two bullets were in his body after the shooting.

"At approximately the three-minute mark of the 911 call, the subject screamed and exclaimed that he had just been shot again," Detective Brad Boulet said, according to The Detroit News. "Responding officers heard several gunshots inside the house."

Layne stood mute in court when the charge was read, and a not guilty plea was entered on her behalf.

An open murder charge allows a jury to decide on whether a first- or second-degree charge applies after hearing evidence.

Ira Kaufman Chapel via AP

Jonathan Hoffman, seen in an undated family photo released by the Ira Kaufman Chapel in Southfield, Mich., was fatally shot at his grandparents' home in West Bloomfield Township, Mich.

Hoffman had been attending an alternative high school in nearby Farmington and living with his maternal grandparents so he could complete his senior year while his divorced parents settled in Arizona, according to his father, Michael Hoffman of Scottsdale, Ariz.

Drug paraphernalia
Layne's attorneys have said there were problems at the condo, and Layne was afraid of her grandson. One of her attorneys, Mitchell Ribitwer, told reporters Monday that drugs and drug paraphernalia apparently belonging to the teen were found at the condo after Hoffman was killed.

Michael Hoffman said that regardless of his son's behavior, the teen was unarmed and didn't deserve to be shot to death.

"I'm not saying he was aggressive, but if he was, I don't understand how being aggressive but unarmed would justify her using deadly force," Hoffman said according to ClickOnDetroit.com.

Detective Brad Boulet testified about Hoffman's 911 call and said when officers arrived at the condo, Layne was inside, behind a screened door.

"She put the gun on the floor after being ordered so by officers," Boulet said. "She exclaimed she had just murdered her grandson."

Another of Layne's attorneys told ClickOnDetroit.com that he thought Layne was "not in control of her emotions" at the time of the incident.

"She was afraid. She's not a big, strong woman," Jerome Sabbota said.

'Derogatory to his grandmother'
Wearing an orange jumpsuit in court, Layne smiled and nodded to her husband and other family members.

Ribitwer said Layne had lived in the West Bloomfield area for 30 years. His requests for a reasonable bond and electronic tether monitor for Layne were denied. A pre-examination conference for Layne was set for Thursday morning.

Prosecutors had no comment after the hearing. Layne's husband and other relatives attended the hearing but also didn't comment.

Police had responded in March to a domestic disturbance at Layne's home.

"I spoke to the officer who responded, and he indicated this young man was totally out of control in the street," Ribitwer told reporters Monday. "He was derogatory to his grandmother. He was yelling and shouting and almost got into it with the police."

Jonathan Hoffman's funeral is set for 11 a.m. Tuesday.

Msnbc.com staff and The Associated Press contributed to this report.

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