The best friend of slain Joanna Simpson will take part in the London Marathon in memory of every woman killed by a man last year. Hetti Barkworth-Nanton, 59, was the last person to speak to "soul mate" Joanna Simpson before she was brutally killed by her husband in 2010. She has tirelessly fought for BA pilot Robert Brown to remain behind bars after he was jailed for manslaughter. Now Hetti will run 26.2miles wearing a pink bespoke cape decorated with butterflies to represent every woman killed