The Modesto Bee says 18-year-old Cashel Sophia Phin pleaded no contest to soliciting murder and was sentenced on Thursday. Attempted murder and willful poisoning courts were dismissed as part of a plea deal.
The month-old infant was healthy when her mother was arrested in May. She's now in foster care.
Phin told a fellow Modesto High School student that she wanted to kill the infant by throwing her into a trash can.
Police were told that Phin tried to persuade her sister to use rat poison to kill the infant.
A blue substance floating in the bottle was thrown away.
