GEORGETOWN, Texas — Sixteen years ago, a young Georgetown woman on winter break from college, went for a run and never came back.

Cooke’s family and the Williamson County Sheriff’s Office held a ceremony at 5 p.m. Wednesday at the tree planted in her memory at Georgetown High School.

Cooke was 19 years old when she disappeared in January 2002. She was back home from college in San Diego.

Most recently, in June of 2017, a tip 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 foot 3 inches, 115 pounds, 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.

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