NEW : Knox ' DNA report due Thursday will help her case , her father says . Amanda Knox says she is ` ` shocked '' by the testimony of Rudy Guede . The sample , however , was so small that forensic scientists investigating Kercher 's murder were not able to double-test it in accordance with international forensic science norms , which Knox 's legal team says raises doubts about its validity . Guede , convicted separately of killing Meredith Knox , denies another convict 's testimony . Knox and her former boyfriend were found guilty in 2012 of killing Kercher in Perugia .
NEW : Knox ' DNA report due Thursday will help her case , her father says . Amanda Knox says she is ` ` shocked '' by the testimony of Rudy Guede . Guede , convicted separately of killing Meredith Knox , denies another convict 's testimony . Knox and her former boyfriend were found guilty in 2012 of killing Kercher in Perugia .