I'm surprised you let them know you have supplies. You know where they'll be headed in case of need.
My mom - at any given time - has 2 six packs of coke, some bananas, and 100 calorie popcorn bags at her house. That's what she lives on, just a few days of no transportation and she'd be in a heap of trouble. It's so funny, you open her frig - nothing in there. When we visit for several days, we eat what we bring or eat out.
This and a couple cases of Ramen Noodles and crackers would be a good thing to have around. None of that is very expensive.
They live 5 states away. I'm not concerned.
Only my like minded brother here in town, along with a couple of people I trust to band together with us should it get truly bad know what I have.