ERIE — A 45-year-old Pennsylvania woman will spend nine to 20 years in prison for causing the death of her friend's infant while high on cocaine.

Crystal Clayton of Erie was sentenced Wednesday. She had previously pleaded guilty to third-degree murder in the death of 3-month-old Shadoni Steele.

Authorities say Clayton caused fatal head injuries to Shadoni while she baby-sat her Jan. 29. Clayton said she didn't immediately take Shadoni to the hospital because she was "high."