My daughter will be 9 in February and still believes in Father Christmas and the Tooth Fairy. The first of her little pre-molars is coming out at the moment and she's expecting a letter, and maybe a picture, from the Tooth Fairy... I realise this is all my fault as I have supported her beliefs by putting 'fairy footprints' in her dolls house, writing to her as if from the Tooth Fairy, and doing the PNP Santa thing every year, but how long can I let it go on for?