She called the company and was relieved to hear that the gun had been handed in to security.
Afterwards she explained to the interior investigations team that she normally puts her weapon in the sink so that she will not forget it. But the smaller toilet booths at the store did not have a sink, so she put it next to a bin.
Almost two hours passed before she discovered the item was missing. She will now face disciplinary action, either a warning or a smaller amount deducted from her salary.