"Dec 28 is close to New Year. Normally we wish each other but not so this time as our thoughts are with the young woman fighting for her life after a barbarous attack on her," she said.
Manmohan Singh said a panel headed by a former chief justice of the Supreme Court had been set up to suggest changes in the law to make punishment more stringent, and another headed by a former Delhi high court judge to look into the lapses behind the ghastly crime.
Though the prime minister said she was being given the best possible medical care, a section of the medical community in the Indian capital said there was no logic in moving her to Singapore when she was in such a precarious condition.
"I can't understand the logic behind it, or rather it is unusual to transfer the girl from Delhi to Singapore when the patient has suffered a cardiac arrest, as I have been informed by the media," Samiran Nundy, chairman, department of surgical gastroenterology and organ transplantation, Sir Ganga Ram Hospital, told IANS.
Another senior doctor from the trauma centre of the All India Institute of Medical Sciences, requesting anonymity, said: "Maybe it was politically logical to shift the patient. But as a doctor, I would say it is totally insensitive to shift the patient with her infection spreading. Shifting now, that too within a few hours of cardiac arrest, is thoughtless."
Nundy also said that in case of intestinal transplant, chances of survival are five years in 60 percent of cases, and one year in 80 percent.
"The family is shattered by this development. At the same time, they realised that best possible medical attention was given. And in the end it was the scale of injuries that proved too much for the medical attention provided to her," the envoy said.
He said the final few hours was a trying time for the girl's family and they bore the entire process with a great deal of fortitude and courage.
Raghavan said the family has requested that their privacy be respected in their hour of grief.
The girl, accompanied by her parents, was was flown in an air ambulance in a critical condition on Wednesday night after her health had suffered a setback that morning in the Delhi hospital following a government decision over which experts were divided.
The six-hour journey itself was said to have been eventful with her blood pressure having dipped alarmingly.
The patient had remained in an extremely critical condition since admission to Hospital in the morning of 27 Dec (Singapore time), the Mount Elizabeth hospital statement said.
"Despite all efforts by a team of eight specialists in Mount Elizabeth Hospital to keep her stable, her condition continued to deteriorate over these two days."
The hospital statement said "She had suffered from severe organ failure following serious injuries to her body and brain. She was courageous in fighting for her life for so long against the odds but the trauma to her body was too severe for her to overcome."
"We are humbled by the privilege of being tasked to care for her in her final struggle. We acknowledge the faith the Indian Government and the patient's family have placed with us to ensure the best care possible was indeed provided to her at Mount Elizabeth Hospital," it said.
"We share their huge sadness at her passing and will work with the High Commission of India to provide the family support in this time of grief," said Dr Loh.
Late last night, the hospital said the condition of the rape victim had taken a "turn for the worse".
"As of 9 pm (6:30 PM IST), the patient's condition has taken a turn for the worse. Her vital signs are deteriorating with signs of severe organ failure," Loh had said in a statement.
"This is despite doctors fighting for her life including putting her on maximum artificial ventilation support, optimal antibiotic doses as well as stimulants which maximise her body's capability to fight infections," the CEO had said.
During her treatment in Safdarjung Hospital, the girl's condition had recorded several ups and downs. Three days after the attack, her gangrenous intestine was removed.
The bestial attack on the girl and her male friend in the bus had sparked off protests by students and women activists which took a violent turn in the capital last Saturday and Sunday.
Death for rapists was one of the demands of the protesters and the victim's demise could trigger fresh display of emotions on the streets.
One of the Delhi police constables Subhash Chand Tomar died in a government hospital on Tuesday and the post-mortem report had said that he had suffered a cardiac arrest from complications arising out of injuries on his chest and neck.
Shaken by the public outrage, government constituted a Commission of Inquiry into the incident and also set up a three-member Committee under former Supreme Court Chief Justice A S Anand to look into the possibility of rewriting the laws relating to aggravated sexual assault and enhancing penalty for it.
Congress President Sonia Gandhi had yesterday demanded speedy action against the perpetrators of the "barbarous" attack while Prime Minister Manmohan Singh said the government was committed to bringing the guilty to justice as soon as possible.
