Davidoff has a history of mental problems and according to family members may have thought her son Jacob was a home intruder

Charged: Dianne Davidoff, 42, who is accused of killing her son reportedly tried to save his life

A 42-year-old Oregon woman accused of fatally shooting her son in the back tried to save his life.

Dianne Davidoff allegedly shot her 17-year-old son Jacob Ryan Davidoff on Thursday September 24 at their home in Gresham.

According to a probable cause affidavit filed on Wednesday, Gresham police officer Mark DeLong said Davidoff was saying, 'I killed my Jakey! I can’t believe I killed my Jakey!' when he arrived at the residence.

DeLong was greeted by Jacob's grandmother at the door who made a 911 call at 7:34pm the night that Jacob was shot.

She told a dispatcher that she started performing CPR on her grandson four minutes later because he was beginning to turn blue, reports KATU.

When DeLong went up the stairs at the home he found Davidoff performing CPR on her son.

Grisham police officer said her heard Davidoff muttering to herself, 'Why did I do that? What did I hurt him? Why did I kill my baby?'

Police also say that they found a silver Ruger SP101.38-caliber Special revolver on the bed next to a black fanny pack with bullets in it.

Court records say that Davidoff has a history of mental illness and financial issues.

Davidoff pleaded not guilty to charges of murder and unlawful use of a weapon on September 28.

Multnomah County Circuit Court Judge Karin Immergut has ordered Davidoff to the Oregon State Hospital for a medical exam and a psychiatric examination.

The state hospital will report on Davidoff's condition on December 6.

Jacob was a student at the Metro East Web Academy in the 2013-14 school year, but there is no record of him attending the academy or any other school last year or this year, the Portland Tribune reported.

Killed: Jacob, 17, was allegedly shot to death by his own mother on September 24. His mother reportedly tried to give him CPR shortly after

Mental health examination: Multnomah County Circuit Court Judge Karin Immergut has ordered Davidoff to the Oregon State Hospital for a medical exam and a psychiatric examination

According to court records in Multnomah County, the family's home went into foreclosure in 2012 but the sale was canceled in February 2014.

Wells Fargo bank asked the sheriff's office to take control of the property in November last year.

Court records showed that the home's occupants did not vacate and a notice was sent to them in August asking them to leave the property.

According to the Tribune, the family was preparing to move out shortly before the alleged incident.

Bruce Maiden, their neighbor for five years, said he rarely saw Dianne.

'(She was) very reclusive and recently she was expressing a lot of fear that somebody was after her,' Maiden told KPTV.

'We feel sick and shocked because a young boy's life was taken.'

Childhood photo: Jacob's sister Katelyn started a Go Fund Me page for her brother so that he can have a proper funeral. They are pictured here together as young children

Maiden also said that Davidoff recently bought a gun out of fear and that she lost her job recently.

'It was a small revolver. She showed it to us tucked in her belt 3 weeks ago,' Maiden told KPTV.

He said that she would tell stories involving the FBI and suspicious people lurking in the neighborhood.

He was worried about her changing behavior, he said, but didn't think she would commit murder.

Davidoff's relatives told KPTV that she may have thought her son was an intruder.

The Oregonian reported that the mother was experiencing money problems and had debt collection agencies chasing after her.

Jacob's older sister Katelyn started a Go Fund Me page for her brother so that he could have a proper funeral.

So far she raised $6,655 of her $6,000 goal.

Student: Jacob was a student at the Metro East Web Academy in the 2013-14 school year, but there is no record of him attending the academy or any other school last year or this year