My daughter is a wise little bunny for five. One day earlier this year - when i was feeling rather low - she looked into the mirrored wall of my bedroom and said 'It's hard to look at yourself in the mirror isn't it mummy?". Her perception of how i was feeling simply took my breath away. So i cannot treat her as a 'fool' - so now when she asks me 'Why don't you and Daddy live together any more?' - what is the best answer to give to one who is only five????