Drabble Dienstag - The Skeleton Key

Here's the drabble (100 word story) for today. I love to hear feedback so I can improve.

That old skeleton key. It sat in a drawer, gathering dust and little strings of cobwebs. The metal had rusted a tiny bit so that it was more brown with red spots than black anymore. Its destiny had never been fulfilled, and now no one even knew what it opened. In fact, no one knew it existed. It sat in a drawer that was part of a desk that had been in the back of an antique store for years. Until a curious little girl came and dug around, she took the key in her fist and took it home.