The sister of slain Tokyo bar hostess Lucie Blackman has weighed in on the Blackman family feud, calling her mother "venomous" and "destructive."

Sophie Blackman told the British tabloid magazine Hello! that her family has been damaged by Jane Steare's public criticism of Tim Blackman for accepting $900,000 in condolence money from an associate of convicted serial rapist Joji Obara, who was recently cleared of Lucie Blackman's murder, despite a raft of circumstantial evidence.

Obara was sentenced April 24 to life in prison for attacks on nine other women and for causing the death of an Australian hostess by drugging, the same way Blackman is believed to have died.