Lorie Ann Taylor-Keller is sentenced to four consecutive life sentences in prison for killing her ex-husband, his wife and their 5-year-old daughter.
She will also have to pay $11,000 in restitution.
Nakia Keller was sentenced to three consecutive life sentences for the murders.
She and her husband, Nakia Keller, pleaded guilty to murdering the family in Hardy County, West Virginia in 2009.
Taylor-Keller and Keller killed Dennis “Chip” Taylor and his family at their home.
In December, prosecutors said Taylor-Keller deserved the death penalty. If she had been convicted, she would have become the third woman since the 1950's to be put to death by federal prosecutors.
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