The canning and buying of many items mine never had an issue with. She did kind of raise her eyebrow a little when the #10 cans started showing up but when the trucks could not get to the springs for 3 days I took her to king soopers and showed here what was left.
3 days and the store was 3/4 empty. No dary, no bread, shelf's empty of everything but auto supplies and air fresheners. She understands now.