WARNING: This story contains disturbing and graphic details.The third woman to testify at Richard Mantha's sexual assault trial told the court she discovered what happened to her after a friend sent a clip of a video she says showed her being raped for three hours and 40 minutes."I fought for most of the whole time, which was three hours and 20 minutes, and in the last 20 minutes, my body went limp," said the woman whom CBC News is identifying as CB. Mantha is on trial on 20 criminal charges inv