By Leon Watson UPDATED: 15:22 EST, 22 February 2012 Murdered: Pensioner Jean Dobson, 86, who was battered to death A former EastEnders actress told a friend she had made three crucial mistakes after battering an elderly widow to death, a court heard. Karen Williamson, 45, described the killing of Jean Jobson to neighbour Donna Coleman and admitted she had made a string of errors, jurors were told. Williamson is alleged to have used a hammer and a glass jug to cave in her 86-year-old victim's skull before fleeing with cash, jewellery and bank cards. The mother-of-one, who featured in a host of TV shows including The Bill and EastEnders as an extra, made her confession around ten days after the killing, the Old Bailey heard.
@highlight
Karen Williamson battered widow with a hammer and a glass jug, court hears
@highlight
It is alleged she admitted killing the pensioner to a neighbour
Karen Williamson
Williamson
Karen Williamson
Giving evidence, Ms Coleman said @placeholder had made the shock revelation as they chatted in her bedroom, following the accused killer's first interview with police.
Karen Williamson
Williamson
Karen Williamson
'While they were tussling about the old lady shouted: "@placeholder, have you gone mad?"