Dressed in black, Ms Grieg wept quietly as Mr Barboza broke down while describing Ms Saldanha as talented, compassionate and a loving wife and mother.
A night shift nurse sister, Ms Saldanha was in charge of the hospital and transferred the hoax call to the Duchess of Cambridge's bedside nurse, believing it to be the Queen and Prince Charles.
The nurse, who cannot be named due to court restrictions, took the call from her trusted long-time colleague, initially believing "I would be talking with the Queen".
She gave information about Kate's condition before starting to doubt the call's legitimacy.
"Initially it seemed plausible," the nurse told the court.
"I started feeling nervous when the caller talked to a male voice asking about taking the corgis for a walk."
The nurse said she would never have transferred such a call through to the ward like Ms Saldanha did, though she had never been in that role.
Ms Saldanha later emailed the nurse to apologise.
"It's all my fault. I feel very bad about this to get you involved," she said in the email, read out in court by the nurse.
"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."
She added: "Please blame me for this ... I can only say sorry. Please accept my apologies."
The hospital's matron, Caroline Cassells, said she tried to reassure the nurse that the hospital understood it was a mistake and there had been no mention of disciplinary action.
"Although they had breached protocol we felt it was a nasty trick at a ridiculous time of the day," she said.
"There was no indication that she wasn't coping, she was seen as coping."
Ms Saldanha reportedly left a suicide note blaming the Australian DJs for her death and asking them to help pay her mortgage.
Ms Grieg was not listed as a witness but tweeted on the morning of the hearing: "I have made a commitment to the Saldanha family that I would answer any questions that they have, on or off the stand, and I'm here to uphold that promise."
She had hoped to testify about Ms Saldanha's demeanour during the prank call but Dr Wilcox said the nurse's state of mind after the call, rather than during, was the key.
Southern Cross Media Group chief executive Rhys Hollern was not present but said in a statement 2DayFM's production team initially thought the hoax featuring "bad impersonations" would be humorous and entertaining.
He said the station deeply regretted the tragic aftermath.
Mr Barboza told the court, including his two children, that Ms Saldanha had "touched the hearts of everyone she has met."
He insisted she had not suffered psychiatric problems, depression or attempted to harm herself in the past.
The inquest is expected to conclude on Friday.
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- AAP
