SAN DIEGO -- A former county toxicologist awaiting trial in the poisoning death of her husband was released from custody Friday after her parents posted $1.25 million bail, 10News reported.

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Hear From Kristin Rossum

Kristin Rossum, 25, is accused of killing Gregory de Villers after he threatened to report her for having an affair with her supervisor.

A beaming Rossum (pictured, left) spoke to reporters outside the women's detention facility at Las Colinas.

"I'm just so grateful for all the friends and family who helped me get out and go home to my family, whom I've missed so much," Rossum said.

"I just look forward to proving my innocence in court come this summer," she said.

Rossum is charged with murder and a special circumstance allegation of murder by poison. Prosecutors decided against seeking the death penalty against Rossum, who now faces life in prison without parole if convicted. Her trial is scheduled to begin June 3.

Rossum was arrested last June 25 following an eight-month investigation, and initially was held without bail.

Once prosecutors made their decision not to seek capital punishment, a judge set Rossum's bail at $1.25 million.

Ralph and Constance Rossum are both professors in Los Angeles County. They told Superior Court Judge John Thompson last month that their daughter would probably live with them pending trial.

"We're just enormously grateful that this day has come," Ralph Rossum said Friday. "Grateful to the judge who actually set bail in this case, and grateful to our many friends and colleagues and family members who put up enormous personal assets and resources."

But Deputy District Attorney Dan Goldstein said Rossum is a flight risk, a danger to the community and a drug addict.

"Every time the police have come into contact with her, she was on methamphetamine," Goldstein said Friday. "I have serious concerns that she's going to be in the public."

"There is an inherent flight risk whenever someone is looking at the possibility of never getting out of jail," Goldstein told 10News.

Prosecutors theorize that Rossum gave de Villers a lethal dose of fentanyl after he threatened to turn her in for alleged methamphetamine use and an affair with Michael Robertson.

Fentanyl is sometimes given to cancer patients and is not normally screened in toxicology tests. It is said to be many times more powerful than morphine.

A quantity of fentanyl was missing from the county Medical Examiner's Office, according to preliminary hearing testimony.

Rossum originally told police that her husband committed suicide.

Investigators became suspicious of de Villers' death because the victim's body was covered with rose petals, something they did not believe a man would do before killing himself.

The crime scene was reminiscent of "American Beauty," which Goldstein said authorities learned was a movie Rossum loved.

Late last year, Robertson and Rossum were fired from the Medical Examiner's Office -- Rossum for drug use and Robertson for failing to report her.

He has denied any involvement in de Villers' death and has moved back to his native Australia.

Goldstein said there is "strong circumstantial evidence" that Robertson was involved in the death, and he is being investigated.