Don't worry about it, off days happen.

I'm likely going to work the first of the two ideas in to my next post, the kids at least will ask that, maybe a dog if I have them show up. Kakashi is just tired, so his capabilities at being a host are going to be gone.

People showing up to ask Airi about walking with Kakashi a bit after seeing would only have more questions if they try and she happens to not be at home.