HRT: Husband Replacement TherapyWhat do you do when you're told you've got terminal cancer at 50? Take up crochet, get religion and bow out gracefully? Or upend your life and spend every remaining minute exploring new pleasures? Rollicking fun for women of a certain age. Ruby has always been the generous mediator among her friends, family and colleagues, which is why they have all turned up to celebrate her 50th birthday. But after a few too many glasses of champers, Ruby's speech