NEW : The missing woman 's parents blast her friends ' `` deafening silence '' CNN student Spierer disappeared in up to two weeks . A landfill near Bloomington holds waste from near intersection where she was last seen . 3 a.m. Spierer 's keys were later found in that alley , but the petite blonde never made it home . The search may take June , police say .
NEW : The missing woman 's parents blast her friends ' `` deafening silence '' CNN student Spierer disappeared in up to two weeks . A landfill near Bloomington holds waste from near intersection where she was last seen . The search may take June , police say .