A former Winnipeg Child and Family Services supervisor is contradicting a social worker's testimony about assessment reports being altered in the case of Phoenix Sinclair.

Diana Verrier, appearing before the Phoenix Sinclair inquiry via video link on Tuesday, said she believed a 48-hour response time in the girl's case was appropriate. (CBC)

Diana Verrier's testimony on Tuesday went against statements made on Monday by Debbie De Gale, who worked in the crisis response unit at Winnipeg Child and Family Services (CFS) in 2004.

De Gale told the inquiry that she took a call in May 2004 from a person who was concerned that Phoenix was back in the care of her mother, Samantha Kematch.

De Gale said she determined Phoenix faced a "severe risk" of neglect and indicated that a Child and Family Services (CFS) response was required within 24 hours.

De Gale said she filed a safety assessment form, calling for the 24-hour response time, but she claims that Verrier amended the file without her input and downgraded the risk level. The response time was changed to 48 hours from 24.

As well, two important pieces of information somehow went missing from an accompanying report, De Gale added.

Verrier confirmed on Tuesday that the initials on the amended form were hers, but she believes De Gale is mistaken in this case.

"When I look at what she's written in the report, and when I look at what she's checked off on the safety assessment, it is clear to me that it was a 48-hour response … it's indicated in the report and it's indicated in her checkmarks," Verrier told the inquiry.

Verrier said she thought a 48-hour response time in Phoenix's case was appropriate.

Social worker Debbie De Gale has testified that Verrier, her supervisor at the time, altered her safety assessments on Phoenix Sinclair. (CBC)

As for the report, Verrier said there was no reason to remove information from it.

"It would be unethical to remove any information from a report, so absolutely not," she testified.

"That would not fit with the role of ensuring that we had all the information that we needed to ensure kids were safe."

Phoenix only lived to be five years old, spending her life in and out of foster care before she died in 2005, shortly after being returned to Kematch.

It was not until nine months later, in March 2006, that Phoenix's body was found, wrapped in plastic, in an unmarked shallow grave near the local landfill on the Fisher River First Nation.

Kematch and her partner, Karl McKay, were convicted in 2008 of first-degree murder in connection to Phoenix's death.

The inquiry is looking at how CFS officials handled Phoenix's case and why her death went undiscovered for months.