Admin issues

Hello everyone: I am the administrator of my team's speech and debate facebook page. We have a chain of administrators, and one of them happens to be my deranged ex girlfriend, who keeps continuously removing me as admin, but i am unable to prove that because we have at least 6 other admins. Is there an way to be able to trace my ban back to her or show which admin deleted me via some sort of utilization of the facebook code of that site? your help would be much appreciated.