Kelly Armstrong, 28, disappeared in August 2011. Her family hasn’t given up hope that they’ll find her, but they said they fear search crews have, RTV6’s Jenna Kooi reported.

"Our family deserves justice for the crime of murder against my daughter Kelly,” Teresa Edwards said.

Armstrong’s family members said they are becoming more distraught as each day passes.

"If our family had sufficient finances and political influence, we would've had a more aggressive investigation," Edwards said.

Investigators said Armstrong’s boyfriend, Travis Funke, confessed to killing her, which led authorities to the Wabash Valley Landfill.

The Howard County Prosecutor would not confirm any further details about Funke’s role in the investigation, but said he is behind bars on unrelated charges.

"The boyfriend who confessed to this murder should not have the right to plea bargain his own sentence for this serious crime,” prosecutors said.

Armstrong’s sister, Shelly Rush, said despite the search’s focus on the Wabash Valley Landfill, she wants to believe that her sister is still alive.

"I don't want to believe she's (in the landfill). This is where police have been led, so until we find her there, I still have hope that maybe she's not,” Rush said.

Police said they plan to search for two more days, but will suspend their efforts because of lack of resources.