Travis Alexander's brother Stephen Alexander and sister Samantha Alexander gave statements ot the jury on the first day of the death penalty phase of Arias' case.
Arias, 32, was convicted last week of murder for killing Alexander using a knife and a gun in 2008. If she is given the death penalty, she will be the third woman on Arizona's death row.
"I thought my brother was bulletproof. I thought he was stronger than anything, that he couldn't be cut down or knocked down," Stephen Alexander said. "He was unbreakable. Who would want to do this to him? For what reasons? Unfortunately I won't ever get the answers to most of my questions."
Alexander's brother and sister were not allowed to petition directly to the jury for any particular sentence. They were allowed only to express how Alexander's murder has affected them and what type of person Alexander was. Stephen Alexander said that he suffered nightmares, became withdrawn and depressed, and separated from his wife after his brother's murder.
"I don't want these nightmares anymore. I don't want to have to see my brother's murderer anymore. I don't want to hear his name dragged through the mud," he said.
Both Stephen and Samantha Alexander had to pause frequently to compose themselves while addressing the court, and tears streamed down Arias' face, drippig off her chin and onto her black blouse.
Arias will also have the opportunity to speak directly to the jury. Her attorneys will first present character witnesses on her behalf, including another ex-boyfriend, Darryl Brewer, to convince the jury that "mitigating factors" exist in the murder that should prompt the jury to spare Arias from the death penalty.
Attorney Kirk Nurmi told the jury today that they would hear about Arias' clean criminal record and her lifelong attempts to better herself. They would also see examples of her artwork, he said.
The center of today's drama was the testimony of siblings, who live in California but have attended the trial in Airzona since it began in January.
"We have been at this trial everyday since it started," said Samantha Alexander. "We have heard every detail about the crime and the injuries Travis suffered. I am a police officer, and some of these photos are more gruesome than what I've seen in 11 years of law enforcement."
"Our family has bore the burden of extreme financial hardship and loss to be sure that Travis's life was not forgotten, not lost in vain," she said. "To have Travis taken so barbarically is beyond any words we can find to describe our horrific loss."
Earlier this week, Arias' attorneys petitioned the judge to be let off the case, a motion they've made at least once before during the five month trial in Arizona.
Nurmi and Jennifer Willmott met with Judge Sherry Stephens on Tuesday morning and asked to withdraw, according to court minutes documenting the meeting.
The documents do not shed any light on why Nurmi and Willmott wanted to withdraw from the case.