The mother of the unarmed black teenager shot to death by a white NYPD officer said Monday she was frustrated the officer quit instead of getting fired following a disciplinary trial in a case that sparked outrage over police use of deadly force against black men and boys.

Constance Malcolm said that despite begging the mayor and police officials, she still has no real answers in the 2012 death of her 18-year-old son Ramarley Graham, shot to death by Officer Richard Haste.

"Where's my son's justice? Where is the city of New York's justice for the people in our community?" she asked at a press conference. "I'm here to say Ramarley's life mattered."

Graham was killed inside the teen's own bathroom as his grandmother and little brother looked on in horror.

A police review board said the shooting was justified. But Haste was brought on departmental charges for demonstrating "poor judgment." He was accused of not taking obvious steps to defuse the fatal standoff. Administrative Judge Rosemarie Maldonado found on Friday that Haste should be fired. He quit Sunday.

Haste told a newspaper reporter outside his home Monday that Graham's family had every right to be upset, and he wanted to meet with them to tell them what happened. When asked at the press conference, Malcolm said she would not meet with him.

"I don't want to be sitting here and saying 'oh poor me.' That's not the case," Haste told a reporter for The Daily News. "I took this job, I understood the risks, I came on after all those cases you hear about. You just never think it's going to be you."

His attorney, Stuart London, told News 4 over the phone that Haste declined to take the department's offer of a 10-year pension. Haste will also not be allowed to carry a concealed weapon like other retired officers in the city, and he will not receive medical benefits from the department. 

Malcolm and other activists demanded the firing of two other officers involved in the shooting and questioned why the shooting was considered justified. They blasted the NYPD and mayor's office for "allowing" Haste to resign, and for not being notified of the decision first.

NYPD is not allowed under state law to disclose police personnel records, though department officials have said they would notify the Graham family when a final decision was reached.

But Haste quit before the final decision. The findings had not yet been presented to Police Commissioner James O'Neill, who has the final say. According to a statement late Sunday, O'Neill agreed with the judge's findings.

In his testimony during the departmental trial, Haste recounted how he got out of his police van during a drug probe in Graham's Bronx neighborhood and followed the teenager, suspected on police radio chatter of having a gun, into his apartment building.

After Haste and his partner broke down the door of Graham's home, the officer said he saw Graham sidestep into a bathroom, and he leaned inside to face him. Haste testified that he yelled, "Show me your hands!" but Graham instead reached deeper into his pants and yelled obscenities.

"I thought I was about to be shot," Haste said. "I expected to be dead."

The 35-year-old officer initially faced a criminal manslaughter charge in the death, but the case was dismissed because of a procedural error. A new grand jury declined to indict, and federal prosecutors also declined to bring charges.

The teen's family settled a wrongful death lawsuit against the city for $3.9 million.

On Monday, Malcolm said she would continue to press to change police practices.

"Today it's my child. Tomorrow it could be yours," she said.