FILE - This undated file photo released by the Orange County Sheriff's Office in Orlando, Fla., shows Caylee Marie Anthony. Texas state Sen. Chris Harris says he will introduce a new law to make it a felony for a parent or guardian to not report a missing child. The Arlington Republican will name the law after Caylee Anthony, the daughter of Casey Anthony. The Florida mother did not report her daughter missing for more than a month. She later said her daughter died accidently. Casey Anthony was found innocent this week of murder charges. (AP Photo/Orange County Sheriff's Office, File) The Associated Press Casey Anthony waits in the courtroom before the start of her sentencing hearing in Orlando, Fla.,Thursday, July 7, 2011. Judge Belvin Perry sentenced Anthony to four years for lying to investigators. Anthony could be free in a matter of weeks after spending nearly three years in jail on accusations she murdered her 2-year-old daughter. While acquitted of killing and abusing her daughter, Caylee, Anthony was convicted of four counts of lying to detectives trying to find her daughter. (AP Photo/Joe Burbank, Pool) The Associated Press Casey Anthony and her attorney, Jose Baez, listen to arguments during her sentencing hearing in Orlando, Fla.,Thursday, July 7, 2011. Judge Belvin Perry sentenced Anthony to four years for lying to investigators but says she can go free in late July or early August because she has already served nearly three years in jail and has had good behavior. While acquitted of killing and abusing her daughter, Caylee, Anthony was convicted of four counts of lying to detectives trying to find her daughter. (AP Photo/Joe Burbank, Pool) The Associated Press Casey Anthony smiles before the start of her sentencing hearing in Orlando, Fla.,Thursday, July 7, 2011. Judge Belvin Perry sentenced Anthony to four years for lying to investigators but says she can go free in late July or early August because she has already served nearly three years in jail and has had good behavior. (AP Photo/Joe Burbank, Pool) The Associated PressST. PETERSBURG, Fla. (AP) — Many of the thousands who followed the Casey Anthony trial did not get the guilty verdict they wanted, nor did they learn the truth about what happened to the 2-year-old daughter she was accused of murdering.And for the public, that may be one of the most frustrating parts of the case: Despite all the speculation and theories, they will never know how or why Caylee Anthony died.Doug Berman, a law professor at Ohio State University, says it's normal for people to believe that an effective justice system will answer questions. He says what's frustrating for some people is not that the jury's decision reflected the fact that the jurors couldn't piece together what happened.