Win, whenever I see one of these stories about people accidentially losing wallets, etc. full of large amounts of cash, etc;., I have to wonder how anyone could do that. Who walks around with a wallet stuffed with thousands of dollars in cash, much less leaves it on a shelf in a store? If for some reason, I had a large amount of money in my wallet (can't really think why I would, but just suppose), I would have my hand on that wallet every second. Why would someone put it on shelf in a store and just "forget" it?
That scenario is really bizarre. Maybe it happened more often in medieval times, when people carried their gold coins, etc. around with them, as banks did not exist? But in today's world, a wallet stuffed with money like that would make me very suspicious. Maybe the money was just stolen from the store's cash register, and the thief panicked about what they were doing, and dropped the wallet and the money like a hot potato? Maybe it was a joke, with counterfeit bills? Or maybe a scenario for that TV show, What Would You Do? with a cameraman lurking around the corner?
If all was on the level and this absent-minded woman was carrying around such a large amount of cash in a wallet that she "accidentally" left on a store shelf, then she is an idiot. Or she could have something wrong with her mind.