Dan, I am sorry about this. If you can, go get your youngest and go home. Talk to him and be honest about what is going on with Diana. I promise you that they will feel better. If you son is in class crying, his day is shot anyway. Go get him, reassure him, and tell him what is going on. He may feel excluded. I have 4 kids of my own, and I have not really been able to fool them. They are smarter than you think.