In a statement, St James's Palace said: "The Duke and Duchess of Cambridge are deeply saddened to learn of the death of Jacintha Saldanha."
"Their Royal Highnesses were looked after so wonderfully well at all times by everybody at King Edward VII Hospital and their thoughts and prayers are with Jacintha Saldanha's family, friends and colleagues at this very sad time," the statement read.
Will the royal couple take a radical step and name their child, if they have a girlbaby, as Jacintha. Like Princess Kate, the Indian-origin nurse was a commoner and a good soul.
Jacintha's brother Naveen called her a "proper and righteous person" who would have been devastated by the hoax.
One of her neighbours in Bristol (Saldanha family home) said, Jacintha was a kind woman. "She used to walk an elderly neighbour who has dementia... down to the shops and back".
London newspaper Daily Mail quoted her neighbour Mary Atwell, 56 as saying, "She was a lovely, lovely person who always spoke to you when you saw her in the street."
Another neighbour of Saldanha described the nurse as 'a lovely woman'. Marianne Homes, 49, said, "I've always known her as the doctor, she was always very smartly dressed."
A neighbour, known as Maxine, said, "She was a lovely woman, just so smiley and bubbly. We used to joke with her that she was a nurse for the queen, she was just so nice."
Jacintha's driving instructor Jeff Sellick was quoted by the Daily Mail that he was in 'complete shock' at her death.
Meanwhile, a Palace spokesman said the royal couple had not made a complaint about the prank call. But being the queen of Australia, Queen Elizabeth can send a formal letter to the Commonwealth country and begin prosecution. British-born Australian Prime Minister Julia Gillard described the death as 'a terrible tragedy' and, through a spokesman, passed on her deep-felt condolences to the family of Jacintha.