EDGEMONT - Today marks exactly two years since the disappearance of Lauren Spierer, a college student from Edgemont.

The 20-year-old Indiana University student went missing after a night of partying in 2011. She was last seen walking home alone to her college apartment shortly after 4 a.m.

advertisement | advertise on newsday

While there has been no new information about the girl's whereabouts, her family is now dealing with allegations that she had a serious drug problem. That allegation comes from the parents of Lauren's boyfriend at the time of her disappearance, Jesse Wolff. The Wolffs say their son has nothing to do with Lauren's disappearance and that the reason she vanished is because of her drug abuse.

In an article published in the Journal News Sunday, Wolff's parents called the Spierers "liars," saying, "This poor little girl is not with us today because of her drug abuse." "I'm not going to respond to anything the Wolffs had to say about Lauren," said Charlene Spierer, Lauren's mother.

Although Wolff has passed a polygraph test with regard to Lauren's disappearance, the Spierers still want him to take an FBI-administered polygraph test, something he has refused to do.

Bloomington police have received more than 3,000 tips regarding Lauren's case, but her family believes the key to her disappearance lies with those who saw her last.

advertisement | advertise on newsday

For an exclusive interview with Charlene Spierer, Lauren's mother, click on the video on the left or click on News 12 Extra on Channel 612.