"It's a Jane Doe," Taco Stein, the Solicitor General told PEOPLE of the DNA test results

Credit: Courtesy of Beth Twitty/AP

A jawbone found on an Aruban beach earlier this month may belong to a young woman, but her name is not Natalee Holloway, DNA tests show.

“It’s a Jane Doe,” Taco Stein, the Solicitor General told PEOPLE Tuesday shortly after making information about the jawbone public.

The discovery of a jawbone with an intact molar raised hopes yet again that Natalee’s parents would have some closure regarding the fate of their daughter who disappeared in 2005 when she was just 18.

Natalee’s mother, Beth Holloway, “accepts the forensic conclusions, is emotionally exhausted from the inexplicably long wait, and deeply disappointed in the time and manner in which she learned of the results,” her lawyer, John Q. Kelly, said Tuesday afternoon. “Apparently Aruban prosecutors were more sensitive to media concerns than the painful vigil of a mother.”

Natalee went missing while on a trip with her graduating class, and was last seen leaving an Oranjestad bar called Carlos ‘n Charile’s in the company of a Dutch boy who is now in jail in Peru for the murder of another young woman.

Joran van der Sloot, 23, was released without charge in Natalee’s disappearance, but he is being held in connection with the brutal murder of Stephany Flores, a 21-year-old business student. Van der Sloot was charged with first-degree murder and robbery in the Flores slaying, which occurred on May 30, exactly five years to the date of Natalee’s disappearance.

Natalee’s parents have worked tirelessly to keep their daughter’s case active, and while they never seemed to give up hope, Beth Holloway recently said she was ready for any outcome.

“I think that we all know that it was not good, the outcome for Natalee,” she said. “But it’s something that you know is so important in a missing person’s case is a resolution, whether it’s recovery of remains of course, everyone would love the outcome that they recover a missing loved one alive, but it just doesn’t always happen that way. We know that.”