Couldn't agree more with this, a good nights sleep really can completely change your perspective on something.Anyway I wouldn't worry too much about the teacher, from what you've written on here and what you've said to me it sounds like you a very good student at your school. Therefore I think this will have a (good!) bearing on the outcome of this incident. Especaially after her outburst in the IT room, it shows she may lose her cool in certain situations, something you managed not to!Just keep your head up, I'm sure it will turn out ok, good luck with your exams!