BEAVERTON, Ore. -- Services were scheduled Tuesday in St. Albans, West Virginia for the woman who died along with her unborn child in an attack in Beaverton. More: Funeral for victim

Heather Snively, 21, was found in the crawl space of a suburban Beaverton rental home on June 5, her unborn child cut from her womb.

On Monday, Korena Roberts was charged with four counts of aggravated murder, one count of murder and two counts of robbery in Snively's death. None of the charges applied to Snively's unborn son, Washington County District Attorney Bob Hermann said. Roberts sobbed as she entered court, and plead not guilty to the charges.

The new charges stemmed from prosecutors' contention that Roberts killed Snively, tried to kidnap the unborn child and subsequently conceal the crimes. The baby did not survive.

Heather Snively

Hermann said additional murder charges would not be filed in the boy's death because prosecutors could not prove beyond doubt that the baby had in fact taken a breath outside the womb before dying -- a critical legal threshhold in Oregon for a murder charge.

There was no evidence the unborn boy ever took a breath, Hermann said. An autopsy had been conducted to try and establish breathing.

Snively's fiancee watches arraignment in silence

Chris Popp sat in the courtroom and watched silently as his fiancee's alleged killer pleaded not guilty.

Popp was still processing the loss of his wife-to-be and their son, whom the couple was to name John.

“Heather just had a big heart and everybody and anybody that had a chance to meet her, she was receptive to everybody, great and outgoing,” Popp said.

He called her murder -- and that of his unborn son -- "mindblowing." "Thank God Heather's got a full photo album of photos and I can look at that and reflect about the great time we would've had,” Popp said.

Unborn baby legislation drafted

Meanwhile, legislators were pursuiing a way to create a new law to address this sort of crime.

Sen. Bruce Starr entered a proposal to criminalize attacking or killing a pregnant woman. More: Pregnant assault law

Starr was quick to point out the law would not apply to abortion procedures or medically-terminated pregnancies. Rather, it would allow prosecutors to bring murder or manslaughter charges when pregnant mothers are killed.

 Poll: Support/Oppose unborn baby law?

Prosecutors did not charge Roberts with murder for Snively's unborn child based on existing Oregon law.

More: 5 other cases of babies cut from womb

False 911 call alerted police

According to authorities, a 9-1-1 call was placed at 2:42 p.m. on Friday, June 5, reporting a newborn baby in distress at a home on NW Mill Creek Drive in Beaverton.

Tualatin Valley Fire and Rescue responded to the address and found Roberts, 27, with another man. Roberts told responders she had just delivered the baby. The baby was rushed to the hospital but could not be revived

Doctors quickly determined that Roberts could not have recently delivered a baby.

Police returned to the home and found the body of a 21-year-old pregnant woman in the home's crawl space. The victim was later identified as Heather Megan Snively.

Police arrested Roberts, who faces murder charges. Roberts has two children, both under 10, who were staying with relatives and not at home when police believe Snively was killed, according to police.

Roberts bragged about being pregnant

Neighbor Terry King told KGW that Roberts had recently been bragging about being pregnant.

“My wife, she loves babies and when Korena told her she was having one, my wife asked if she could hold it. She acted perfectly normal, but didn’t appear pregnant,” said King.

Police say Roberts had been telling friends and family for months that she was pregnant. She had told many people she knew, including her live-in boyfriend, that she was pregnant with twins.

Roberts’ boyfriend continues to be cooperative, police said, and did not face any criminal charges at this time.

Women met on Craigslist, police say

Snively's mother, Heidi Kidd of St. Albans, W.Va., said Snively met Roberts a few weeks ago through Craigslist, the online classified service. According to Kidd, Roberts told Snively she was pregnant and wanted baby clothes. They befriended one another and kept talking online.

"I guess they decided to meet and I guess that was the wrong thing to do," Kidd said. "But Heather's always been a very trusting person."

Washington County Detectives have confirmed the women met through Craigslist, and say they believe the two only knew each other for a week or so.

Detectives also believe that Ms. Roberts may have had contact with numerous pregnant women in the Portland-Metropolitan area. They are asking anyone who has had contact with Ms. Roberts either via the Internet or in person, to please call the Washington County Sheriff’s Office at (503) 846-2700.

More: Attack exposes danger of Craigslist

Victim was 8 months pregnant

Kidd said her daughter was eight months pregnant, and Snively's Facebook photo shows her lifting a pink shirt to expose a large belly.

Snively and her boyfriend, identified by Kidd as Christopher Popp, recently moved to Oregon from Maryland because he got a better job. Popp, the baby's father, reported Snively missing Friday night and is not a suspect, Thompson said.

Kidd said her first grandson was to be named John Steven.

"I'm still in shock; it hasn't hit me," she said. "I mean, that initial phone call; I just couldn't believe it. I just could not believe I was talking about my own child."

KGW reporters Wayne Havrelly, Katherine Cook, Mike Benner and AP reporter Stephen DuBois contributed to this report.