GEORGETOWN, Texas — Fifteen years and several clues later, Rachel Cooke remains missing, but investigators and her family are not about to call off the search

"It hadn't been easy but I'm not giving up," her mother, Janet, said. "Not as long as I have a breath in my body, I want my baby home."

Cooke was last seen a few yards from her home along Navajo Trail.

"Let's bring Rachel home," pleaded Williamson County Sheriff Robert Chody. "Please give them the opportunity to say goodbye."

It's a case investigators have taken to heart.

"We truly believe that someone out there has information about Rachel," Chody said. "If you do, we ask that you not to be afraid. We urge you to come forward and share whatever piece of information that you might have to help us bring Rachel home...please."

"Rachel's little sister deserves to have closure." Cooke begged. "I deserve to have closure."

Investigators and Cooke's family are not giving up on the search, even after 15 years. They are offering a $100,000 reward in the hopes that someone with information will come forward. Half of the money is from the FBI and the other $50,000 is from the Cooke family. 

"It's sad that money sometimes makes a difference whether someone does what's right," Cooke said. "But that's okay if that's what takes my baby home."

"We feel confident that this is a solvable case," Chody assured. "Obviously, I won't promise that but we believe we can find some answers and we're here to do that."

A tip in June 2016 prompted the Williamson County Sheriff’s Office and FBI to dig up a 15-by-20-foot area about five miles north of Liberty Hill, but teams were unable to locate anything.

Despite how long it has been without answers, Cooke's family is determined to keep searching.

"You still got to keep on, keeping on. I've had my ups and had my downs and it hasn't been a joy ride at all," Cooke said. "But I have to stay strong for her."

Rachel Cooke was described to be 5'3", 115 lbs, with blue/hazel eyes and blonde hair. She was wearing a gray running outfit, green sports bra, Asics running shoes, and a yellow Walkman with headphones. She also has two heart-shaped cherries tattooed on her left foot, multiple ear piercings and a navel piercing.

Cooke was 19-years-old at the time of her disapperance. 

If you have any information on what happened the morning of January 10, 2002, or where Cooke is, call the FBI at 1-800-CALL-FBI (1-800-225-5324). You can also submit tips at tips.fbi.gov.