Roberson was last seen walking to a friend's residence in Aransas Pass, Texas on August 6, 1989 between 4:30 and 5:00 p.m. She never arrived at her destination, which was a block and a half from her home, and has not been heard from again. Roberson's mother notified police when she had not arrived home by 11:00 p.m. and an extensive search was launched but turned up no sign of her. Foul play is suspected in her case.

An anonymous tipster sent a map to a Texas news station in June 2001. The letter purportedly contained the location of Roberson's body. Authorities searched the area near Aransas Pass, but no evidence related to her case was discovered. One of Roberson's friends stated she was acting moody and "not herself" on the day of her disappearance. Roberson also refused to attend church that day, which is uncharacteristic of her. It is not known why she was behaving this way and whether her attitude was a factor in her disappearance later that day.

Roberson's mother once dated a violent and abusive man who was involved in the drug trade. Her mother believes this man was responsible for Roberson's disappearance, but there is little evidence to support any theory. Roberson's family moved to Idaho two or three years after she went missing. Her disappearance remains unsolved.