Casey Anthony sits in the courtroom before a sentencing hearing in Orlando, Fla. on Thursday. (Joe Burbank/AP)

The 25-year-old was sentenced to four years in jail Thursday by Judge Belvin Perry. B ut she was credited with time served, which is more than 1,000 days.

Anthony was acquitted of murdering her toddler daughter, Caylee, on Tuesday, leaving many who watched the trial shocked and outraged. The verdict has also sparked a campaign for “Caylee’s Law,” which would make it a crime to not report a missing child.

Both the defense and prosecution are concerned for Anthony’s safety after she’s released. “I wouldn’t want anyone in the community to be so upset by this that they would do something to her,” prosecutor Jeff Ashton said.

More on the Casey Anthony trial and verdict:

Casey Anthony verdict sparks campaign for ‘Caylee’s Law’

Nancy Grace, trial watchers react to Casey Anthony verdict

Casey Anthony trial: The 10 moments that have made the case our national obsession

Casey Anthony trial: Why are we so obsessed?