my dd, 2.5, has just the most awful fingernail/blackboard-type screech whenever everythings's not 100% her way, especially when ds, 5, is around. Whilst on hol the German man above us even ventured to suggest 'das ist not normal' when complaining about the noise (cheeky blighter). How do I get her to stop? Tried ignoring it but when out and about I feel I can't.