Mamaroneck mother takes plea in daughter’s killing; faces 25 years in prison

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A Mamaroneck mother pleaded guilty to the 2018 murder of her 2-year-old daughter and the attempted murder of two police officers.

Cynthia Arce rejected taking a plea just over two weeks ago but changed her mind Thursday before a Westchester County judge.

Under the terms of her deal, Arce will receive a sentence of 25 years to life in state prison.

On April 28, 2018, Village of Mamaroneck police officers responded to Arce’s home on Chestnut Avenue after getting a 911 call from her mother reporting that someone was dying.

Authorities say when officers arrived, they found 2-year-old Gabriella unresponsive on her bed. According to investigators, Arce charged at the officers – repeatedly slashing at two of them with large knives.

Gabriella's father Stephen's Boyd has filed a lawsuit against Mamaroneck, its police department and the Westchester County District Attorney’s Office. He claims they failed to execute a court order granting him temporary custody of his daughter.

"It's a long road ahead of us,” he told News 12. He also said that he was satisfied with the terms of the plea agreement.

Arce's lawyer maintains she suffered from a severe case of post-partum depression.

Cynthia Arce is due back in court on Oct. 31 for sentencing.

5K run held in honor of toddler who died in Mamaroneck 
Arce’s lawyer claims client suffered postpartum depression 
Gabriella Boyd Foundation donates $1K to Humane Society 


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