I'm afraid I come down on the side that opines you are at least equally at fault for leaving your gear unsecured in a public place. You had no "Reasonable Expectation of Privacy" as some in the legal profession would refer to this situation. You're probably lucky she did't cut herself and have you called on the carpet for leaving a dangerous implement lying around. Don't scoff, this is a modern workplace, dumber things have happened. Not trying to be unnecessarily harsh here, but in my opinion, this is mostly on you my friend.