"When my daughter died a few years ago, Marc held me in his arms and cried like a baby, and when I lost my husband two years ago he did the exact same thing," she said.
Mrs Hills, 76, has lived next door to the family Mr Rancadore, his wife, Ann, and children Giuseppe and Daniela since they moved into 13, Manor Waye, a neat property behind clipped, head-height hedges on a corner plot, complete with CCTV camera.
"I met them when they moved in and I have known them since then. It must be 15 years," said Mrs Hills, who heard the Metropolitan Police officers arrive to arrest Mr Rancadore on Wednesday night.
She fondly recalled sitting in the couple's garden and going round for barbecues, and said although they did not receive many visitors, some elderly relatives of Mr Rancadore had paid a visit recently.
She said the well groomed Italian who never lost his strong accent and appeared not to understand much English.
The Rancadores' son, Giuseppe, lives in Spain, according to Mrs Hills.
Mr Rancadore and his English-born wife, who is reported to be the daughter of a former diplomat, had been in the habit of going to help an elderly person to shop for them and check on their wellbeing, said Mrs Hills, making almost daily trips, although she does not know where they went.
She said the couple had recently received some good news.
"They were excited. They have just been made grandparents for the second time."
"He was just a family man who worshipped his children and grandchildren
"They were the ideal. I could not wish for better neighbours."
Mr Rancadore appeared at Westminster Magistrates' Court this afternoon (Friday) and was denied bail and remanded in custody.