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HOUSTON -- A jury has sentenced a Houston woman to life in prison for killing her boyfriend by stabbing him at least 25 times in the face and head with the 51/2-inch stiletto heel of her shoe.

Ana Trujillo could be seen silently crying Friday when her sentence was handed down in last June's killing of 59-year-old Alf Stefan Andersson. She was convicted of murder Tuesday.

Prosecutors say Trujillo attacked Andersson during an argument at his home after a night of drinking. Her attorney argued that Andersson, a professor and researcher at the University of Houston, attacked the 45-year-old Trujillo and that she defended herself with the only weapon available, her shoe.

Jurors had asked to look at the blue suede stiletto heel - a size 9 platform pump.

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