My major question about gold is what will people do when the world governments agree on a set low price for it. What if they enact limits on the amount one individual is allowed to own or how much can be exchanged for cash? How do you then use it for currency? And just what do you buy in a scenario where nothing works, everything is imported and we are told to exist with no choices? What will she do when her apartment building is overtaken with squatters? How will she grow anything in the winter without heat and lights if electricity is limited?
Might as well barter bullets, lead, black powder, seeds or tobacco and invest in some land with a woodlot and a spring.
I agree you cant eat a gold coin, but there is a market for it...and if paper money loses value, it would only make gold more in demand, no?