Newark, N.J. ? A woman who admitted hiding the body of a 7-year-old relative in a basement storage bin was sentenced Wednesday to 25 years in prison, and her son, who admitted killing him in a wrestling move, was sentenced to three.

Faheem Williams’ decomposed body was found stuffed in a basement storage bin three years ago, and his twin and half brother were discovered living in squalor and filth. The case generated national outrage and led to an overhaul of New Jersey’s child welfare agency.

As he sentenced 43-year-old Sherry Murphy, Superior Court Judge Michael R. Casale called the case the saddest he has presided over in his nearly 10 years on the bench.

“I wouldn’t have treated objects or clothes as these kids were treated,” Casale said.

The mother of the three boys had entrusted them to Murphy, her cousin, before going to serve an unrelated jail term.

Murphy and her son, 19-year-old Wesley Murphy, struck plea deals in September. Essex County Prosecutor Paula Dow agreed to the deals to spare the surviving children, who are in foster care, from having to relive their ordeal during a trial, Dow said.

Sherry Murphy, whom the three boys knew as an aunt, pleaded guilty to criminal restraint, aggravated assault and endangering the welfare of a child. Under the deal, a charge of attempted murder was dropped. Wesley Murphy pleaded guilty to reckless manslaughter.

Because he was arrested in January 2003, Wesley Murphy could already be eligible for parole for reckless manslaughter. His mother will not be eligible for 13 1/2 years.

In September, Wesley Murphy testified that he killed Faheem while doing a wrestling move that included forcefully driving his knee into the child’s abdomen.

“I tried to flip him on the bed, but he missed the bed and hit the floor,” he said. “I was in shock. I ran out of the house. I think he was unconscious.”

Sherry Murphy admitted finding Faheem’s body on the floor of her Irvington apartment in September 2002, trying to revive him, and then leaving the corpse there for several days.

She also admitted she provided inadequate food and water to Faheem’s twin, Raheem, and a younger half brother, Tyrone Hill.