A friend is supposed to be coming round to my house today. She wanted to meet up to talk about her latest relationship issue. She chose the time to meet. She’s late. I’ve got a fractious toddler who needs a nap, I also have stuff I need to do later, so I can’t afird to delay things too far. If I take him upstairs to nap I won’t here the front door. How long do I wait before carrying on with my day?