A nurse found dead after answering a radio station's prank call to staff treating the Duchess of Cambridge was "very upset" after the incident, an inquest heard on Thursday.
Jacintha Saldanha was found dead on 7 December 2012, days after speaking to two Australian DJs about Kate Middleton’s morning sickness after she became pregnant with her first child, Prince George. It was revealed this week that the duchess is suffering from the same condition as she is now pregnant with her second child.
The Duchess of Cambridge is due to visit Malta next week, but this could be cancelled if she is deemed unfit to travel.
The inquest on Thursday heard that the nurse thought it was an inquiry from the Queen, the BBC reports.
The station made four further calls to the hospital, the hearing also heard.
The chief executive of the company which owns the station that made the call said it was trying to get permission to broadcast the prank.
(DJs Mel Greig and Michael Christian pretended to be members of the royal family)
In a statement, nurse Araceli Arcilla said Mrs Saldanha was in charge of the hospital the night the call was received during the duchess's first pregnancy.
"She came to me on the ward and told me she had received a call from somebody saying she was the Queen", she said.
"Jacintha believed it was a genuine call and she put it through to the duty nurse. She was worrying that she had put the call through.
"Jacintha told me she was very upset and felt it was her fault."
Mrs Saldanha was the first nurse to answer a call by Ms Greig and Michael Christian.
She passed them to a second nurse on the duchess's ward, who gave out details of her medical condition.
The second nurse, who cannot be named, told the inquest that Mrs Saldanha emailed her after the incident.
The email read: "It's all my fault. I feel very bad about this to get you involved. If there was anything I could do to mend this I would do it.
"I'm very upset and don't know what to do. Things are all going in the wrong direction."
The nurse said she addressed the caller as "ma'am" and spoke about the duchess's condition, saying she was "comfortable".
"I started feeling nervous when the caller talked to a male voice asking about taking the corgis for a walk. This seemed inappropriate for the call," she said.
The hospital's matron, Caroline Cassells, said there had been no mention of disciplinary action and both nurses involved were offered support.
Ms Cassells broke down on the stand when asked about an email she received from Mrs Saldanha the day before she was found dead.
She was unable to respond to the email immediately, she said, but later wrote to the nurse urging her not to worry.
The chief executive of Southern Cross Media Group, the parent company of 2Day FM which carried out the prank call, said it does not hold the two DJs responsible for the broadcast.
Rhys Holleran told the inquest the company accepts it did not obtain consent to run the hoax call.
He said four phone calls made to the hospital shortly after the prank were an attempt to seek permission to broadcast the call.
Mrs Saldanha's husband Benedict Barboza read a statement to the court in which he described her as "my beloved wife and a caring wife, loving mother and undoubtedly one of the best nurses".
He continued: "She was a brave lady and we are very proud of her and we will always cherish her memory."
Mr Barboza said his wife had never suffered from psychological problems or depression, or attempted self-harm or suicide.
The inquest at Westminster Coroners' Court resumes on Friday.
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