Need Advice On Extension Issue

[Ryan Kearns]

I have a property I am selling and on the inspection report there were a few repairs the buyer wanted. We countered with about half of what they wanted. Pretty standard stuff, but here is where I'm stuck.

A week ago the buyer's agent informed us the buyer got covid and due to health issues needed a week extension on accepting our counter or not.  I gave it to them realizing we are in extraordinary times. Today is the expiration of that extension and they just reached out saying they want another 5 day extension as the buyer is in and out of the hospital with covid issues. 

I don't want to be a jerk but I am concerned. I'm worried about the buyer's health, is this a stall tactic? Am I a horrible person for thinking that? What could I ask for in return to grant an additional 5 day extension if I go that route? Should I deny the extension and put the house back on the market? 

Any input appreciated!