"I can't believe someone would bathe her daily for nine months, never know she wasn't having her period, she wasn't growing in her mid-section", one of the woman's former caregivers told ABC15, which did not reveal his or her identity.
Karina Cesena told a Phoenix news outlet, "I do not [know if my daughter was victimised], but I do ask her, and she can answer yes or no".
"I know Chief Jeri Williams and the Phoenix PD Officers will do all they can to find the perpetrator".
Sources quoted in the reports said the woman was heard to be moaning and that the baby's head was starting to emerge when a nurse came in.
The woman, who's been identified as a 29-year-old Native American by news network NTD, was in a vegetative state for 14 years before giving birth at the Hacienda HealthCare facility in Arizona. The Arizona Department of Economic Security has since conducted a health and well-being check on all other patients at the facility. A police report and 911 calls were also not available Saturday.
Hacienda HealthCare said it was fully co-operating with the authorities.
But amid the firestorm that has engulfed it in the first week of the new year, the organization has released two statements, vowing to determine what happened.
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"Hacienda stands committed to doing everything in our power to bring this police investigation to a quick conclusion", the company statement said. Staff members reportedly hadn't noticed the patient was pregnant until she went into labor. "Anything less than that is unacceptable to our team, our company's leaders and the communities we serve". Police themselves did not disclose the information.
Meanwhile, on Tuesday, a woman claiming to have worked in a management position at Hacienda for more than a decade spoke to CBS affiliate Arizona's Family, and claimed the company's recently resigned president covered up another sexually inappropriate incident in 1998.
The news has been described as "deeply troubling" by a representative for Arizona Governor Doug Ducey.
This sign is hung on Jazzmyne Deann Morris's room door at the Hacienda HealthCare facility in Pheoniz, Ariz., where a patient in a vegetative state gave birth on December 29, 2017.
A male patient also complained several staff members walked in on him while he was naked and showering with the assistance of a female member of staff in December 2017, according to records from the Department of Health and Human Services. Then, it was called Hacienda de los Angeles, or "the dwelling of the angels".
But there have been reports of patient mistreatment.
One staff member was sacked for making repeated inappropriate sexual comments to patients. The worker had also been observed watching clients touch themselves. But they did not specifically confirm the reported pregnancy and birth.