Casey Anthony is still “not certain” what happened to her two-year-old daughter, Caylee, who was murdered nearly nine years ago. The 30-year-old opened up about her daughter’s death for the first time during an intimate interview with The Associate Press, which was released Tuesday.

"I'm still not even certain as I stand here today about what happened," she said.

Once called “the most hated mom in America,” Casey Anthony was the number one suspect in her daughter’s death. Despite the fact that Caylee was last seen June 16, 2008, the child wasn't reported missing until July 15, 2008. Casey Anthony, who was arrested for child neglect on July 16, 2008, told police Caylee had been taken by a babysitter.

Months later, Caylee’s remains were discovered in a wooded area near Casey Anthony’s home outside of Orlando, Florida, Dec. 11, 2008. During the trial, in which Casey Anthony was charged with first-degree murder, aggravated manslaughter and aggravated child abuse, experts said air samples proved the remains had been exposed to Casey Anthony’s trunk.

"Based off what was in the media – I understand the reasons people feel about me. I understand why people have the opinions that they do,” Casey Anthony told AP.

However, she's not nearly as concerned with her critic's opinions of her now.

"I don't give a s--- about what anyone thinks about me, I never will," she said. "I'm OK with myself, I sleep pretty good at night."

After Casey Anthony avoided prison, there was still a ton of speculation surrounding her involvement with her daughter’s death. Although the jury found her not guilty, she spent about three years in prison during the trial and was later convicted on four counts of lying to the police.

"Even if I would've told them everything that I told to the psychologist, I hate to say this but I firmly believe I would have been in the same place. Because cops believe other cops. Cops tend to victimize the victims. I understand now ... I see why I was treated the way I was even had I been completely truthful,” she said.

Although her daughter is gone, Casey Anthony, who now lives in South Florida with her former defense team’s lead investigator and private detective Patrick McKenna, still could imagine what Caylee would have been like if she were alive today.

"Caylee would be 12 right now. And would be a total badass," she said. "I'd like to think she'd be listening to classic rock, playing sports" and putting up with no nonsense.

As for Casey Anthony’s parents, who vehemently stood by their daughter’s side during the trial, she said she doesn’t talk to them very often following their appearance on the TV show, “Dr. Phil.”