Bryan Kohberger is escorted to an extradition hearing at the Monroe County Courthouse in Stroudsburg
Reuters

The sister of one of the victims in the Idaho murders has come to the defense of a surviving roommate who waited to call the police after seeing the suspect, Bryan Kohberger, leaving the off-campus home shortly after the killings.

In an interview with NewsNation, Alivea Goncalves, sister of victim Kaylee Goncalves, reflected on the details revealed in the unsealed affidavit that led to Kohberger's arrest.

In the documents, investigators revealed one of the surviving roommates heard a victim crying at the time of the murders around 4 a.m. on Nov. 13 and saw Kohberger leave their off-campus.

The affidavit revealed the roommate was left in a "frozen shock phase" by her encounter with Kohberger and locked herself in her bedroom. Police weren't called until around 12 hours after the murders.

While many criticized the roommate for not calling the police immediately, Alivea Goncalves noted that the female was young and afraid.

"She was probably really, really scared. Until we have any more information, I think everyone should stop passing judgments because you don't know what you would do in that situation," Alivea told the outlet.

Alivea, who spoke with her sister daily, revealed the difficulty of learning Kohberger had been watching the University of Idaho students' Moscow home for months before committing the murders.

"We had no idea. She had no idea. I had no idea that true evil was genuinely watching them," Alivea said.

She added, "That's been the hardest part of this is to sit back and look at the totality of it. When my sister was Facetiming me about a new egg bites recipe, he was planning his next visit to the home."

"That's really difficult not to wish that you had done more and wish that you had known more. But it's just the first step. A lot more evidence will come out."

Kohberger is facing four counts of first-degree murder and one count of felony burglary in the deaths of University of Idaho students Kaylee Goncalves, Madison Mogen, Xana Kernodle, and Ethan Chapin.

Kohberger is scheduled to return to court on Jan. 12 for a status hearing.