Tellez had been babysitting the infant, who was found with brain injuries.
Investigators say Tellez left a note behind saying she was leaving the country for Mexico. The baby involved survived and is now 15 years old and living out of state.
Woman pleads not guilty to shaking baby in '95
June 8, 2010 Rosa Tellez, 43, was arrested last week in DuPage County.
Police had stopped her for a traffic violation when they found she was wanted on a 1995 warrant.
