(CNN) -- A day after a jury found her guilty of first-degree murder in the slaying of her ex-boyfriend, Jodi Arias will return to court Thursday to begin a phase that will move her closer to learning whether she will live or die.
During this part of the proceedings, the so-called "aggravation phase," jurors will take an important step closer to that life or death decision.
"Now the odds, I think, shift somewhat in her favor, because it's a very different thing to sentence someone to die than to convict them," CNN senior legal analyst Jeffery Toobin said.
In a television interview minutes after the verdict was announced, Arias said she'd prefer a death sentence.
"I said years ago that I'd rather get death than life, and that still is true today," she told Phoenix television station KSAZ. "I believe death is the ultimate freedom, so I'd rather just have my freedom as soon as I can get it."
The comments prompted authorities to place Arias on suicide watch in an Arizona jail, according to the Maricopa County Sheriff's Office.
"Until she is released from suicide protocol by Sheriff's officials no further media interviews of inmate Arias will be permitted," the office said in a statement.
Arias was stoic in court Wednesday. Her eyes briefly welled up with tears as a clerk announced that the jury found her guilty of first-degree murder for killing Travis Alexander in June 2008.
Friend: "We have waited five years through the circus"
Alexander's sisters cried and consoled each other after the verdict was read in the packed courtroom.
Crowds outside the courthouse erupted in cheers as news of the jury's decision spread.
Several of Alexander's friends told HLN they were relieved.
"It just feels so good ... to finally have the truth and be vindicated," said Dave Hall, choking back tears.
But that relief isn't enough, Elisha Schabel said.
"It's not going bring Travis back. He was such a light to this world," she said. "And it's important that we forgive Jodi, so she doesn't have that power to destroy our lives."
Another friend, Clancy Talbot, said she was grateful for the verdict.
"Looking at Jodi's face, I think this is probably the first time in her life she has ever been held responsible for what she's done, ever, and I think she's in shock," she said. "We have waited five years through the circus that Jodi has created."
Trial moves into next phase
But the trial isn't over yet, and Arias, who testified for 18 days during the trial, could speak to jurors again in court.
In the next step of the case, known as the aggravation phase, prosecutors will have a chance to present additional evidence and jurors will decide whether Alexander's death was caused in a cruel manner.
If they decide that was the case, the trial would move to the penalty phase, where jurors would decide whether Arias should receive a death sentence.
If the jury decides on a death sentence, the judge is bound by that decision. But if the jury decides against the death penalty, the judge would have two options: sentencing Arias to life in prison without the possibility of parole or sentencing her to life in prison with the possibility of parole after at least 25 years.
There are currently 127 people on death row in Arizona. If Arias is given a sentence of death, she would be the fourth woman on death row in the state.
As jurors prepare for the sentencing phase of the criminal trial, family members of Alexander are preparing to file a civil wrongful death lawsuit, attorney Jay Beckstead told reporters outside the courthouse. Alexander's siblings won't speak publicly about the case until Arias is sentenced, Beckstead said, adding that the family is grateful to prosecutors and detectives for their work.
CNN's Ed Payne, Dana Ford, Ted Rowlands, Ashleigh Banfield and Eliott C. McLaughlin and HLN's Jean Casarez, Beth Karas and Graham Winch and In Session's Scott Tufts and Jessica Thill contributed to this report.