A Ventnor woman who killed her 7-month-old baby by giving her the drug methadone was sentenced to eight years in prison Monday, according a statement from the Atlantic County Prosecutor's Office.

Lisa Scalia, 33, pleaded guilty to aggravated manslaughter in the child's death in December.

Originally, Scalia had been facing charges for endangering the welfare of a child after allegedly rolling over on her 7-month-old daughter, Olaia Marie Mejia, in bed while high on drugs on Jan.3, 2016. The child was found unresponsive in Scalia’s Ventnor home by EMT’s. She died five days later.

Scalia was arrested after 34 bags of heroin and 10 oxycodone pills were found in her possession, according to police. Authorities said an investigation revealed Scalia was under the influence of drugs at the time of the incident.

But after further investigation, prosecutor’s said they found that the infant’s death wasn’t caused by the sleeping mother rolling over on her daughter, but from giving her child methadone, a narcotic used to reduce withdrawal symptoms in people addicted to heroin.

Scalia, who has been housed in the Atlantic county Jail since her arrest, must complete 85 percent of the sentence — 81 months— before she can become eligible for parole, according to the statement from prosecutors.