Kaitland, I could be wrong, but I don't think the perp has the right, her attorney may request if there is no next of kin alive. (Also her attorney may have his/her experts thoroughly review the completed autopsy information, and any remains the family may say they can examine.) However, since perp is in jail for allegedly murdering the victim, all individual rights are lost. This would make the A family next of kin for any sort of medical or legal purposes. IMO.
Merc - you may be right! But, a second autopsy is double edged sword. Of course, they would want to find exculpatory evidence. But any additional confirming info could compromise KC. Perhaps she has a legal right to protection from sources outside of LE? She may make a demand of JB to stop such an effort. Of course, it would be couched in KC style of obfuscation, "Oh I just can't bear any more distress to little Caylee. Please let her be laid to rest in peace." We will know for certain soon enough.