She was with her mom Alicia Monday morning when they stopped to pay their respects at the site where Jessica Ridgeway's body was found.
"Where is she?" asked Barrett, while Alicia walked to a memorial filled with balloons, flowers and stuffed animals.
"She's in Heaven baby," Alicia said.
But how can anyone really explain what happened to a child?
"It just [got] hit hard when we found out it was Jessica. I just I totally broke down," Bobbi Thompson-Gardner said. "I'm having a hard time dealing with it. She's just so little. [It's] so horrific. I can't believe there's anybody out there that would do this."
"I'm angry, I'm a little angry," Thompson-Gardener said.
"It's really really heart wrenching," said O'Herron. "I have my own kids, I can't imagine what her family [or] what her school and her teachers, her friends are going through. My heart is just aching for them."
People who came to the memorial Monday said they were full of hope that police will find Jessica's killer.
"We're confident we're going to catch him. And we're confident the community will play a significant role in this," Trevor Materasso, spokesman for the Westminster Police Department, said.
Residents may be used to seeing hundreds of police officers and investigators in the Westminster and Arvada neighborhoods for days since Ridgeway went missing. But there will be less of them out in the open, as investigators continue to work on this case.
We may not know exactly what they're doing at any given time. That's because police can't often publicize exactly what they're working on.
"If we start talking about a small tip and that becomes public we might not find the next piece that that small tip leads to," Materasso said. "We might give some [information] out that changes some pattern of some behavior - something that we're looking for to identify who that person is. We have to be careful about what [information] is released."
Materasso wants people to remain vigilant, but not take justice in their own hands. He reminded people to call 911 if they saw suspicious activity. He said being a good witness is important.
About a dozen agencies are working the case with Westminster police, including Arvada police, the U.S. Marshals, the FBI and ICE, just to name a few. Each group brings a group of experts that can help in the case.
As for Barrett's mom, she says she's praying a lot.
"I've spent a lot of time praying and praying is a fairly new thing for me. [I'm] just praying for her family, praying for everybody to be brave [and] for people to find that joy and that happiness that the situation has taken away from all of us," O'Herron said. "I don't want to be a victim for this guy to be able to impact other people's lives in such a negative way."
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