…OR DID SHE! DUN DUN DUN!
Years later…a retcon was born.
In the JLA arc Tower Of Babel, Batman abandoned the JLA in the middle of a series of attacks on individual members because someone had robbed his parent’s gravesites…
he launched a one man investigation to find the culprit, not realizing until too late that Rhas Al Ghul had taken the bodies for the express purpose of getting Batman out of the picture while he took out the other Leaguers…with Batman’s own plans for taking out the League members if they ever turned heel.