Houston jurors convicted Ana Trujillo of murder on Tuesday for what has been dubbed as the "stiletto heel killing."
Trujillo claimed she was using self-defense against her boyfriend Alf Stefan Andersson, 59, when she used a stiletto heel to stab him last June.
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Jurors deliberated for less than two hours before returning the verdict, according to the Houston Chronicle.
"This is not self-defense, this is a vicious murder," prosecutor John Jordan told jurors. "To suggest that this was anything close to self-defense is offensive."
The trial will continue to the punishment phase in state District Judge Brock Thomas' court. Trujillo faces a maximum sentence of life in prison.
Trujillo's attorney, Jack Carroll told jurors that her attack was the only way Trujillo, 45, could escape Andersson's alleged domestic violence.
"What would you do if someone suffocates you?" Carroll told jurors during closing arguments, according to the Houston Chronicle. "What would you do if you thought you could die?"
Prosecutors told the jury last month that Trujillo stabbed her boyfriend, a professor at the University of Houston, 25 times with the 5-inch heel of a blue platform pump during a fight.
"It looked like something out of a horror movie," prosecutor Sarah Mickelson told jurors of the scene when police arrived to Andersson's high-rise condominium, according to the Houston Chronicle. "There was so much blood, the police officer thought Stefan had been shot in the face."
Prosecutors said it was Trujillo's rage that was behind the June 9, 2013 killing, according to the AP.
Prosecutors said that the couple went out for a night of drinking and an argument erupted.
During the argument, the professor fell on his back. Trujillo then sat on him, preventing him from getting up, then repeatedly struck him in the face and head with her shoe.
Both sides wavered Tuesday on the exact cause of death, saying it was either trauma to the head, a possible heart attack during the beating or suffocation as Trujillo straddled his chest while she hit him, according to The Houston Chronicle.
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