that didn't take long...
link
"Capt. Timothy Phelps said a woman identified as Donna Lynette Walker was brought to the Shawnee County Adult Detention Center at 5:15 p.m. (6:15 p.m. EDT).
Boone County, Indiana, authorities issued an arrest warrant for Walker, 35, charging her with a felony count of identity deception and a misdemeanor count of false informing after she claimed to be Shannon Sherrill, the grown daughter of Mike and Dorothy Sherrill.
Shannon vanished from Thorntown, Indiana, on October 5, 1986, after playing with friends outside her home.
Authorities said Walker not only called the parents with her false claim but also telephoned members of the news media so the story would generate more publicity. "