Forty-five-year-old Ana Trujillo was found guilty in the 'stiletto-murder' of her boyfriend, Dr. Alf Stefan Andersson on Wednesday.

Trujillo reportedly showed no emotion during the reading of the verdict. However, her family left the courtroom in tears.

So how exactly did this Houston trial get the infamous nickname 'stiletto murder'? Well, according to prosecutors, Trujillo killed 59 year-old Andersson with her 5½-inch size 9 blue suede stiletto heel. Prosecutors claim that in a fit of rage, Trujillo fatally hit Andersson 25 times with the heel.

Despite the prosecution's claim, Trujillo and her defense attorney Jack Carroll insist that Trujillo beat Andersson in an attempt to defend herself.

Andersson, a University of Houston professor and researcher, was described as mild-mannered and quiet by prosecution witnesses. Trujillo, a massage therapist was described as temperamental and high-strung.

In a video of her police interrogation played at the trial, Trujillo says that it was Andersson who became enraged with her after thinking she would leave him. She explains that Andersson began attacking her and that is when she defended herself with the only "weapon" available to her at the time... her heel.

Trujillo told detectives she hit Andersson with her shoe "a couple of times" and didn't realize she had hurt him until she saw blood on the floor. Trujillo told detectives she tried performing CPR on Andersson, Fox News reports.

Prosecution however noted that Trujillo had a history of violence and no injuries were found on her body the night she claims Andersson attacked her.

James Wells, a former romantic partner of Trujillo's, testified during the trial that the Mexican native had previously attacked and threatened him, says TIME.

Upon news of Andersson's death back in June of 2013, the University of Houston issued a statement saying they were," "saddened to learn of the tragic death of Professor Stefan Andersson. Our hearts go out to his colleagues, family and friends during this difficult time."

Trujillo currently faces life in prison for the death of Dr. Alf Stefan Andersson.