Lauren Spierer's family may have to wait: It could take eight weeks before they learn if a skull found near Indianapolis is a match for their missing daughter.

Charlene Spierer, Lauren's mother, looks at it a different way: "That's 80,640 minutes of agony."

Spierer, a then-20-year-old Indiana University student, was last seen June 3, 2011, when she left a friend's apartment in Bloomington, Ind. On July 9, a fisherman found a human skull near the east bank of the White River.

Authorities said the skull has been in the river for at least a year, and there's been nothing other than speculation to indicate the skull may be Spierer's. The fisherman probably wouldn't have found the skull, Deputy Coroner Alfie Bellew said, if not for a severe summer drought.

But the Spierer family and about a dozen other relatives of missing people have called the Marion County Coroner's Office looking for updates on the investigation. The coroner's office may be able to expedite the process, for the Spierer family at least, by comparing the skull's teeth with dental records. Lauren Spierer's DNA and dental records are on file with the federal Combined DNA Index System, known as CODIS.

"Everything is still out for testing," said Marchele Hall, a supervisor at the coroner's office.

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Hall said she wouldn't speculate on how soon expedited test results might return.

In a post on her blog, http://newsonlaurens.blogspot.com/, Charlene Spierer described moments of sadness since her daughter's disappearance -- walking past her daughter's room "just as she left it the last time she was home," receiving mail addressed to her daughter.

Although her family has been in touch with the Marion County Coroner's Office, Charlene Spierer wrote she hasn't been able to think about the details.

"Though this past year has taught me things I never would have expected to learn," Charlene Spierer wrote, "decomposition is one area I refuse to explore."

Spierer also vented her frustration at her daughter's killer or abductor.

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"I guarantee you have no idea what it's like, waiting to find out if the remains recovered from any number of places are those of your child," she wrote. "I hope I am making you uncomfortable. I hope you have as many sleepless nights as I have."