That woman and the likes of her should know that soon there might be no more "real" money, since many countries are aiming at becoming totally cashless societies like Denmark for example.
http://money.cnn.com/2015/06/02/technology/cashless-society-denmark/index.html
Then her only choice will be between two "unreal" types of money:

1. Inflation based fiat money controlled and stored at the banks that has a guaranteed yearly loss of value because of inflation.
2. Deflationary cryptocurrencies that you control yourself and that has been steadily increasing in value.