The Troubling Disappearance of Air Force Nurse Nonnie Dotson

In November 2007, the Jefferson County Sheriff's Office transferred Nonnie's case from the missing persons department to homicide investigator Kate Battan.

Nonnie Dotson

"As time goes on, it's strange that if she was voluntarily missing, we have absolutely no evidence," Battan said in an interview with The Denver Post. "None of her financial records have been accessed. It's odd that there have been no sightings."

The following month, Nonnie's friends and family held two memorial services for Nonnie in Littleton and in San Antonio.

"We wanted Nonnie not to be forgotten, and we are afraid she is being forgotten because there's no word and no clues on her disappearance," Candice told WOAI.com. "For this to happen to her is horrible, and for us getting as little help as we've gotten I think is a tragedy."

On Jan. 17, 2008, a Texas court granted Vehle custody of Savannah.

"My wife and I, from the start of this said that if we ever meet Nonnie either here on Earth or somewhere else, that we have to be able to look her in the eye and tell her that we did the best we could for what she wanted for Savannah and for her," Kevin Doyle, Nonnie Dotson's stepfather, said in an interview with CBS4denver.com, adding, "It's always been what's in the best interest for Savannah. "If we determine it's in the best interest of Savannah to continue this [custody fight] we will."

The Doyles have exhausted their entire savings on legal fees and they recently put their home up for sale to increase the reward for information on Nonnie's whereabouts to $100,000.

There is nothing currently linking Vehle to Nonnie Dotson's disappearance, and the authorities have not named him as a suspect. That, along with the fact that they were thousands of miles apart at the time of her disappearance, makes it less likely, although not impossible, that he was involved.

Anyone with information regarding Nonnie's disappearance should contact the Jefferson County Sheriff's tip line at (303) 271-5612.