Speaking of an August 2011 event, Millerberg testified, "Eric and I started kissing and having sex. Then Alexis jumped in."
Speaking of the night Alexis died, Millerberg said "Eric and I were planning to go shopping for our daughter's birthday. We needed a sitter, so I texted Lexi."
Millerberg described how Eric injected Alexis with drugs; one in the arm and another in the neck. Dea also testified that Eric and Alexis performed oral sex on each other, and that she was not involved in that sexual encounter.
Millerberg said that a short time later, Alexis started "freaking out" and demanded to be left alone while taking a hot bath in the couple's master bathroom.
It was 45 minutes later that Eric and Dea checked up on Alexis, who was standing in their bathroom, still "freaking out" and demanding to to be left alone.
Dea testified that she wrapped Alexis in blanket and left her on the bed in the adjacent bedroom.
When they went to check on Alexis about 45 minutes later, Dea testified, "She wasn't breathing. She had mucousy stuff coming out of the right side of her mouth."
Millerberg told the court that she was a trained nurse whose license had just expired, so she tried to revive Alexis by doing chest compressions and clearing her mouth of the fluids.
Dea said she soon realized that the girl was dead.
"It really was a panic," said Millerberg. "The idea of it was, we will lose our kids and go to jail, and there was nothing we could do to bring her back."
Millerberg also testified that she and Eric decided to not call authorities.
"We would put her body somewhere," said Millerberg.
Dea testified that she and Eric put Alexis' body in a box, which was placed in the trunk of their car.
Miller told the court that she and Eric took their toddler with them in the car as they drove around looking for a place to dispose of the body. Dea also testified that they left their 6-year-old child alone at home while they went to dispose of the body in the early morning hours of September 11.
After they found a spot just off the highway in Morgan County, testified that they backed the car into a secluded spot where Eric removed Alexis' body from the box in the trunk and dragged her into the brush and covered her.
Millerberg testified that they then drove to a site to dispose of the box, another site to dispose of the carpet that lined the car's trunk, and a car wash to clean the trunk out.
State Assistant Medical Examiner Dr. Joseph White also testified during the hearing.
White spoke of the forensic evidence gathered during the investigation.
"The circumstances are suspicious," said White. "The fact that the body was discovered so far away and she couldn't get there herself; It seemed suspicious, and that someone else was involved."
"It is highly unlikely this was an accidental death," said White. "The presence of drugs is a strong possibility as cause of death."
"Drugs are dangerous and unpredictable. Every time you use drugs there is a chance of death," added White.
White also testified that large amounts of meth and heroin were in Alexis' system, although her body was too decomposed to do a complete autopsy. Medical examiners have previously determined that the cause of Rasmussen's death was more than likely a drug overdose.
Dea filed for divorce from Eric after their arrests in connection with the Rasmussen death. Dea remained free on bail during Monday's court proceedings. Eric attended the hearing, although he remained in the custody of the Utah State Prison for parole violations on convictions unrelated to the Rasmussen case.
Prosecutors said that Eric's fellow gang members led investigators
to the location in Morgan County where Alexis' body was dumped. Her remains were located on October 18.
A North Ogden police investigator told the court that after the Millerbergs disposed of Alexis' body, they drove to three different locations to get rid of evidence, including the Riverdale car wash.