Wilharm told CNN her family knew that her grandfather would die soon.
"The next thing I know he's telling him, "I got these MRI results back and there's no lungs left, there's nothing to work with".
Mr Quintana's daughter, Catherine, told KTVU that the family was further upset because her father had trouble hearing the doctor through the speakers, forcing Ms Wilharm to relay the awful news. "I was going to lose my grandfather".
The doctor appeared on a live video feed via the robot and told Quintana that he was likely to die within days.
A septuagenarian Californian learnt of his impending death through a video link, outraging his family, who protested against the dehumanised and robotic way in which the news was delivered.
The Kaiser Permanente Medical Center, where Quintana was being treated, responded in a statement carried by USA media in which it offered condolences to the family but disputed the characterization that the news was delivered by "robot".
Wilharm told CNN that her family was under no illusions about her grandfather's condition.
But it fell short of saying more about when, and under what circumstances, its doctors use telepresence robots to provide care for patients. According to her, they said that "it's policy, that's what we do now".
"This secure video technology is a live conversation with a physician using tele-video technology, and always with a nurse or other physician in the room to explain the objective and function of the technology", Gaskill-Hames added.
It was through the video call that the doctor told Quintana that he only had days to live. "We use video technology as an appropriate enhancement to the care team and a way to bring additional consultative expertise to the bedside". "The evening video tele-visit was a follow-up to earlier physician visits - it did not replace previous conversations with patient and family members and was not used in the delivery of the initial diagnosis".
Catherine says that she spoke to hospital staff about the robot.
"I don't want this to happen to anyone else". "It should have been a human", Catherine Quintana said.