Goldsboro police arrested and charged 32-year-old Umoja Bryant with first-degree murder and felony child abuse last week.
Those charges came after officers responded to a reported child death at Wayne UNC Healthcare on Thursday.
An autopsy report later revealed the child died from blunt force trauma.
During the investigation, a 5-year-old boy was also discovered with injuries.
Both children lived in the same home.
Bryant is currently being held on no bond.