Mich. Woman Accused of Killing Girlfriend's 'Happy, Smiling' 4-Month-Old While Mom Was at Work: Reports

A Michigan woman is charged with murder in connection with the death of a 4-month-old baby she was babysitting.

Savannah Marie Miller was charged with murder following the death of Renzi McCall in Reed City, Mich., according to reports from Fox 17, WZZM and Cadillac News. 

It is not immediately clear if Miller has entered a plea or retained an attorney. 

Fox 17 reported that Miller was initially charged with child abuse, but the charge was elevated to murder after the baby was taken off life support on July 25, four days after being taken to the hospital.

Citing Renzi’s grandfather, Jeremiah White, WZZM reported that Miller is the girlfriend of the baby’s mother.

White told the outlet that the baby’s entire body was bruised and that she suffered brain swelling and seizures before her death.

Citing police and prosecutors, Cadillac News reports that Miller is accused of assaulting the baby while her mother was at work.

Want to keep up with the latest crime coverage? Sign up for PEOPLE's free True Crime newsletter for breaking crime news, ongoing trial coverage and details of intriguing unsolved cases.

A GoFundMe started to raise money for Renzi’s family has raised nearly $7,000.

“Renzi was a happy, smiling baby who brought immense joy to everyone around her. Amber is now facing unimaginable pain and grief,” the organizer wrote. “We ask for continued prayers and support for Amber and her family during this incredibly difficult time.”

If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453, or go to www.childhelp.org. All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages.