Good grief. My mother did something similar actually (though not in a crazy lady kind of way, obviously...) - after Dad died she found a couple of guns at the bottom of his tennis sweater drawer that she knew definitely weren't his shotguns (which were licensed and locked up correctly). So her brother asked a retired policeman friend of his to go round and take a look and this guy turned up, obviously having been told something along the lines of 'It sounds like she's found an air rifle and freaked out, could you go round and reassure her?'

Mum opened up the drawer and the ex-policeman went white to the roots of his hair - semi-automatic machine guns, probably brought back from his national service stint, fighting in the Mau Mau rebellion in Kenya! They got hastily donated to the Royal Gloucesters Museum!