A Florida woman whose 8-week-old infant was found buried near their home has been sentenced to 25 years in prison.

The Herald-Tribune of Sarasota (http://bit.ly/1T8kUJm ) reports 32-year-old Kristen Bury pleaded no contest Wednesday to aggravated manslaughter in the Sept. 16 death of Chance Walsh. As part of a plea deal she must now testify against the child's father, Joseph Walsh. He faces second-degree murder and child neglect charges.

Investigators say Chance was buried near their home in Sarasota before his parents left Florida to start a new life.

After Bury was sentenced, Sally Susino told the judge her daughter lacks the "mother's instinct to love and protect her young."

Chance's other maternal grandparent, John Murawski, called Bury a "monster," and said the child and his parents "slipped through society's cracks."