When Esther Elizabeth Reed was indicted last year, Brooke Henson's relatives said they hoped Reed could tell authorities where to find her.
"Of course at first, it was just giving us hope that Brooke was alive," Lisa Henson, Brooke's aunt, said Monday.
Investigators have since said they don't think Reed had anything to do with Henson's 1999 disappearance.
Reed is accused of stealing Henson's identity in 2003 and posing as her to obtain false identification documents, take a high school equivalency test and get into Columbia University.
She was indicted last year and made her first court appearance Monday on federal charges of identity theft, mail and wire fraud and obtaining false identification documents. If convicted on all four charges, Reed faces a possible $1 million fine and 47 years in prison, time Lisa Henson said she hopes Reed will serve.