While bitmover has explained how to transfer the BTC wealth to the next of kin, that question sounded so dark; after shopping, go home, gets asked "Will I get your BTC if you die?".
Actually i felt serious in that one also , Because why talking about death just hours after She saw you used that BTC transaction ? haven't OP told His Wife about BTC ever since or they did not tackled how this works?
I find it offending if i were in His place to be asked like this in not so formal manner after seeing the function.
But regarding the question ? since you looks like wanted to share it with her, Then why not give her the Private key also ? since that is your conjugal wealth being married couple.
I felt like damn,this guy married a devious gold digger(or probably a "black widow").
If a woman asks me that question,I would be like "Stay away from my Bitcoins you b*tch,you won't get anything,my kids will inherit my BTC,not you!"
I would then probably get a divorce after that.
Such question is really offending.As if that woman is planning to kill the guy and get all his money/assets.