“She was defenseless…and you murdered her.” Mamaroneck mom sentenced

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It was an emotional day in Westchester County Court Thursday as a grieving father lashed out at his former partner – the woman convicted of killing their toddler daughter.

Stephen Boyd didn’t mince words before Cynthia Arce was sentenced to 25 years to life for killing their daughter Gabriella Boyd.

"It's unbelievable and inconceivable that you took the life of my 2 ½ -year-old little girl," he said. "You never deserve the title of mother."

According to prosecutors, Arce killed Gabriella at her Mamaroneck home on April 28, 2018 – a day after learning Boyd had gained custody of her. Arce pleaded guilty to second-degree murder in September.

Before handing down her sentence, Judge Barry Warhit called her a “special category of evil.”

Arce had nothing to say in court. Her attorney Jeffrey Chartier said that his client “accepts responsibility.”

“We hope that this brings some closure to those involved," he said.

Chartier maintains Arce suffered from a severe case of postpartum depression.

Stephen Boyd has filed a civil lawsuit against the Village of Mamaroneck, Westchester County and Child Protective Services for what he claims is their failure to enforce a court order granting him custody of Gabriella.

"Today we would have been trick-or-treating. You took it all away," he said in court. "You're evil, selfish and a baby killer. The term that you serve, and I hope it's for the rest of your life, is clearly justified."

Arce also pleaded guilty to two counts of attempted aggravated assault for stabbing two police officers who tried to save Gabriella when they responded to the 911 call at her house. The judge sentenced Arce to 10 years on each count to run concurrently with her murder sentence.

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