30 May 2012
Last updated at 09:14 GMT
Mrs Winnall’s family released a picture of her while she was in hospital to show the extent of her injuries
A reward for information about the attack on a 93-year-old woman in her home has been doubled to £10,000.
Emma Winnall suffered a fractured skull, a broken arm and wrist and a partially severed finger in the attack in Moseley, Birmingham, last month.
She had been in intensive care since being found and died on Tuesday. A post-mortem examination is due later.
Crimestoppers said its original £5,000 reward had been matched by The Jack and Ada Beattie Foundation.
Pauline Hadley, from Crimestoppers, said anyone who contacted them with information was guaranteed anonymity.
“Somebody knows who’s done this, or think they know who’s done it but they don’t want to go to the police, so we plead with them to get in touch,” she said.
“Sometimes the reward is just enough to encourage somebody to come forward with that information.”
West Midlands Police, which is conducting a murder inquiry, said Mrs Winnall died of complications arising from her injuries.
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