A Riverside woman has been charged with first-degree murder after a toddler she was babysitting suffered a fatal head injury, according to authorities. The investigation began April 26, when the Riverside County coroner’s office notified the Beaumont Police Department of a 15-month-old who had suffered a head injury while under the care of a babysitter in the 14200 block of Barolo Way. Heather Greenman, 37, of Riverside, faces charges of first-degree murder, child abuse and abuse resulting in death after a 15-month-old she was babysitting in Beaumont suffered a fatal head injury. (Beaumont Police Department)The suspect, identified as Heather Greenman, 37, was arrested Thursday on suspicion of child abuse and abuse resulting in death, authorities said. After reviewing the case, the Riverside County's district attorney's office added an additional charge of first-degree murder.