Complex sentence: She appears to have been shot in the head by Harvey Dent's gun, although Batman is convinced Dent is not the killer, and her body has been partially eaten by Killer Croc.
Split into simpler sentences: She appears to have been shot in the head by Harvey Dent's gun, although Batman is convinced Dent is not the true killer. He finds that her body has been partially eaten by Killer Croc.