Courtney Shanvice McBride, 20, of Davie, Fla. was charged with cruelty toward a child and neglect after the father of her infant alerted a relative who called police, the South Florida Sun-Sentinel reported.
"The photo showed the plastic bag completely covered the child's face and head," said Davie Police Capt. Dale Engle.
McBride told authorities the photograph was a joke, the report said. She was arrested on April 1.
Her 5-month-old daughter and a 2-year-old sibling have been placed with relatives, the Florida Department of Children & Family said.