I am mortified and at a bit of a loss as to how to handle.
He was expecting a particular treat this afternoon which I have withheld and explained why...not sure how much he's grasped. Would you do anything else or leave it at that??
Also I know the other mum to say hello to, dont have a way to contact her, so will have to wait to see her to apologise. Would it be ok to buy her dd a little present or would this be weird? I feel so sorry for her!