Arias says Alexander had grown physically abusive in the months before she killed him, once even choking her into unconsciousness, but she kept seeing him because she was in love.

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The police warned her not to visit him but she did and Lewis, who felt she had betrayed him, tortured and killed her.

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But the prosecution said he killed his sister after she lost patience with him and asked him to leave the flat in Pelter Street, Shoreditch, where they lived.

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Jerry Richardson, who was her right-hand man during the thuggish days when she surrounded herself with a gang known as the Mandela United Football Club, and is currently serving a life sentence for Stompie's murder, said this week that she ordered that the boy be killed, but did not herself stab him.

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Her widowhood was long, after Richard was killed in a car accident in 1975, but she never thought of replacing him.

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Arias says she killed him in self-defense after he attacked her, but the grisly slaying caused even some anti-domestic violence advocates to doubt her case.

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Doctors told him she had died from a respiratory illness but he believes that it was exposure to formaldehyde that killed her - although there is no proof her death was linked to living in the trailer.

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