Lisa Irwin is turning 1 Friday, but the grandfather of the missing baby says the child's first birthday without her will be the oh-my-God moment for the family.

Lisa was reported missing from her Kansas City home in the early hours of Oct 4. The toddler's maternal grandfather, David L. Netz Jr, told The Kansas City Star that her birthday would be a wrenching milestone for the family.

That's gonna be the oh-my-God moment. I can't even imagine what that day will be like. What will we do? How will we get through that? I don't even know how to ask Debbie and Jeremy what we should do or how to help them through that, said Netz.

Lisa's parents Deborah Bradley and Jeremy Irwin said they believed their daughter had been abducted from her crib.

Irwin was doing electrical work for a local Starbucks the night the baby disappeared. He says he returned home around 4 a.m., and saw several lights on, the front door unlocked and three missing cellphones. When he checked his daughter's crib, she was  missing.

The baby has been missing for more than a month. Police are still investigating the case and no one has been arrested so far in the case.

About 1,000 leads have been cleared by the police till now but they say they have no major leads in the case.

People are judging whether Debbie's crying enough, or if she's crying too much, or if her lip curls up in some body language secret, or if Jeremy doesn't show enough emotion, said Netz.

My God, Debbie and Jeremy can't even relax and smoke on the back porch without seeing hidden cameras popping out of brush. It's horrible, he said.

Netz, who believes his daughter is not involved in the baby's disappearance, said that his granddaughter was out there somewhere. They can take her away, but they can't take away her memory. She is so special to us, he said.