The family of Freddie Mercury’s secret daughter have today announced that she has died aged 48 after a long battle with a rare cancer. The Daily Mail can reveal for the first time that the Queen singer called her ‘Bibi’ and wrote several songs about her. Author Lesley Ann Jones revealed her existence in the bombshell book Love, Freddie, published last summer. Lesley has today revealed Freddie also called her his 'trésor' and his 'little froggie'. The Queen songs 'Bijou' (jewel) and 'Don't Try So