My ds has just started pre-school - he'a about to turn 3 at the end of this month. Today he came home and told me a girl in his class told him that she was going to kill him and that she was going to cut him. More disturbing is that he told me he wasn't supposed to tell me about it. He said it happened two days ago, and he's been having nightmares so it's clearly upsetting him. I've informed the pre-school, but what should I do now? How can I help him?