The grieving daughter of murdered Harrow pensioner Molly Morgan has paid tribute to her mum - who died following a street mugging last week.
The 81-year-old was attacked on her way to do voluntary work at Kenton Library on Friday and fell as a result of her bag being snatched.
Her daughter Hilary, a talented artist, has produced a painting of the bag in the hope it will lead to an arrest.
She said: "My mum was so active and full of life. I still can't believe she has been taken away from me.
"I am her only daughter and we were close. She encouraged me in my dream of going to art school.
"If this painting helps to catch the person who killed her, it's the most important painting I've ever done."
A post mortem carried out on Friday at Northwick Park Hospital gave cause of death as subdural haematoma. It also found that Mrs Morgan had a broken left arm and multiple fractures to the left side of the face.
Police are now looking for a man they believed walked past her as she lay on the floor and are calling for anybody with any more information to come forward.
DCI Jessica Wadsworth from the Homicide and Serious Crime Command, leading the
investigation said: "We are now clearer about the circumstances of Molly Morgan's murder.
"When Mrs Morgan was attacked she fell to the ground, and we believe she was on the pavement for about 10 minutes before anyone came to her aid.
"Whilst at hospital, Mrs Morgan told police that a man walked right past her and didn't stop, even when she asked for help.
"I need to trace this man, and any other people who saw Mrs Morgan lying on the pavement, since they are vital witnesses and will be able to help me find who killed Mrs Morgan.
"It is our belief that this man, and other people in the area who didn't assist the victim, may tragically not have realised that Mrs Morgan had been attacked and was in considerable pain. We know from some witnesses that they had assumed she was merely a drunk on the street.
"Anyone who was on a Route 114 bus which drove along Streatfield Road between 19:30 and 20:00 on Thursday evening should contact police, even if they don't feel they have any information to offer.
"I would appeal to anyone who has recovered or seen the property, who witnessed anything or has information that may assist police to call the Incident Room at Hendon on 020 8358 0300 or Crimestoppers on 0800 555 111."
The brown leather bag taken from Mrs Morgan contained an empty carrier bag, extension lead and a Primark umbrella.