Amanda Knox (left) is comforted by her sister, Deanna Knox, during a news conference shortly after her arrival at Seattle-Tacoma International Airport on Oct. 4, 2011. (Associated Press)

Photo by: Elaine Thompson

Amanda Knox (left) is comforted by her sister, Deanna Knox, during a news conference shortly after her arrival at Seattle-Tacoma International Airport on Oct. 4, 2011. (Associated Press)