OK, so how would you like to be nearly thirteen, immensely talented, funny and stylish - and stuck in the Flowerdew family? It's not that Amaryllis doesn't love her mum and dad - she even sort of loves her weird, swotty little brother Hugo, in spite of the experiments he performs on her bra - it's just that she'd rather not be seen out in public with them . . . A sparkling, stylish comedy fabul…