Our daughter is going to be sitting her Highers (Scottish A levels) soon and we're worried about the stress that she seems to be putting herself under. She's always done well at school and she's expected to pass with flying colours, but she's revising every minute - evenings and weekends – and she seems to be seeing her friends less and less. We've tried to reassure her that everything will be ok, but it doesn't seem to make much difference. It's painful to see how anxious she is, what do you suggest?