Had a parent ask if they could pay late, now things are awkward

[playfelt]

I would probably bring it up to her and say I really feel bad that I was not able to accommodate your payment request but unlike a large business with multiple layers - if you don't pay me my weekly fee I don't have the money I need to buy food for your child to eat this week. I have my own family expenses to handle and can not or do not feel it is fair to take money from my own family to feed your child. When the mom realizes it all put into perspective it should ease some of the awkwardness. Then add something like however I do appreciate that you asked and did not just assume and for that I am grateful.