A Superior Court judge on Friday ordered a new trial for the woman who was convicted more than 10 years ago of abusing children at her family's Fells Acres Day Care Center.

In a decision that could have implications for hundreds of child-abuse cases around the nation, Superior Court Judge Isaac A. Borenstein said that the child-abuse trial of Cheryl Amirault LeFave was tainted by flawed interviews of children.The judge ruled that none of the children, now teenagers, would be allowed to testify in the new trial because their testimony would be "forever tainted" by the techniques used by investigators.

He also dismissed all the charges against LeFave's mother, Violet Amirault, who died in September at age 74.

The judge had already ordered a new trial for LeFave based on other grounds.

LeFave, her late mother and her brother had all been convicted and imprisoned for molesting children at the Malden day-care center.