Just out of curiosity: What are your son and your wife doing to combat the issue? Did they have an online presence before this event? If so are they exploiting that more and if not are they going to create one?
I am not a small business owner but would love to be one one day and in this crisis have often thought about what the strategy would be in a time like this. I am guessing the strategy would be to purchase zero new inventory unless you are overloaded on orders for specific items. Attempt to move all of the inventory you have off the shelf and essentially shut the doors to decrease on your amount of variable expenses. Leaving your expense in only building expense, inventory tax expense (if there is such a thing) and additional taxes you have to pay. At that point you have to bank on whatever you have in your coffers/sales on existing inventory will carry you until you open back up and make a profit again which may be 3-4 months.