MEDFORD, Ore. -- Kyron Horman's mother, Desiree Young and step-father Tony Young spoke to reporters from Medford on Tuesday. They reiterated pleas for Terri Moulton Horman, Kyron's step-mother, to cooperate with investigators.

Reading from a statement, Young called on Terri to do the right thing and cooperate.

You need to do what is right. Not for me, not for Tony, not for Kaine and not even for Kyron. You need to do it for Kiara because she needs to see that you did the right thing to bring her brother home, Desiree said. Kiara is Kyron's 19-month-old half-sister and Terri's daughter with Kaine Horman.

Raw video:Watch interview with Desiree

This latest press conference was just two days after accusations leaked into the media that Terri allegedly tried to have her husband killed and just hours after a reliable source told Newschannel 8 police were ready to arrest Horman in connection with that plot.

More:Plot to kill Kaine Horman

Young refused to engage in what she called, mud slinging and would not discuss the alleged murder-for-hire or any of the other relationship details that have hounded this case. Instead, she talked about her little boy and her life without him.

I watch videos of him because it comforts me to see him smile and honestly I just pretend like he's here, she said.

More:Family describes life without Kyron

Visibly emotional, Young said she and her husband, Tony along with Kyron's father, Kaine still believe Kyron is alive. We're parents. We still expect him to get out of bed every day and come and see us. So of course we believe he's alive until we're told otherwise.

The Youngs said they won't give up and Kyron's Southern Oregon home is still prepared for his return.

Terri Horman's lawyer did not immediately return a call for comment Tuesday.

Complete coverage:Kyron Horman case

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