I went to market with my wife to buy things for our new born baby, after my wife selected baby things that Worth thousands and I paid with my btc,the transaction was very easy and faster. When we returned home ,she asked if you die can I achieved your btc or continued with your account? Because it's very easy and faster in trading and transaction.
Just let your wife know anything about BTC and share the private key of your account so that she could access it anytime she wants. At least, both of you know how to access your digital wallet and withdraw some money in case needed. I'm glad that BTC is being used as a medium of exchange in your country and hope my country adapts soon.