The father of Melanie Hall, whose remains were found by the side of the M5, has called on those responsible for their daughter's death to have the "moral fibre" to give themselves up.
A bag of bones was found by a workman clearing a motorway slip road verge on Monday.
Forensic examination of the bones, dental record checks, and a ring found on one of the finger bones led to a positive identification that the remains were that of Miss Hall, who went missing 13 years ago.
The family had been told on Tuesday that the remains were probably Melanie - they had been asked by police to identify the ring found at the site.
Steve Hall said the family had known it would take about a day to formally confirm her identity at a post-mortem examination.
"We had about 24 hours to come to get used to the idea and yesterday [Wednesday] was a working day for me which was probably a good idea.
"That helped pass the day and when the results came through at six o'clock we were told what we were expecting anyway.
"We really hoped the day would come when Melanie would be found so, to some extent, there was a positive feel about the day."
But now the family want some answers.
Mr Hall said: "People out there have been protecting someone they suspect was responsible for a missing person.
"Now they are protecting someone responsible for a particularly callous murder and dumping of the body.
"That act has changed the life of Pat [his wife], myself and our family - it will never be the same again.
"It is time those people found the moral fibre to come forward and give some assistance to the police and bring this case to a close.
"Finding out what happened to Melanie will bring about some justice and closure," he added.
The Halls said they had hoped the day would come when they would get answers to what happened to their daughter after she left Cadillacs nightclub in Bath.
They had three specific questions, Mr Hall said.
"Where Melanie was. Who was involved with what is now her murder and why. What were the circumstances that led to her murder?"
The couple said they had been quite sure, before the bones find, that Melanie was no longer alive.
Mrs Hall said: "Thirteen years was a quite a long time but at least we've achieved that."
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