THE appalled father of three sisters who gave birth after conceiving at 12, 14 and 16 blamed their mum last night. Rubbishing Julie Atkins' claim that the girls' school was at fault for failing to give proper sex education, 42-year-old carer Martin Dodd said: "How can she say that? It's not the school's fault. It's hers. "If this had happened to one of them you'd have said it was an accident. But for three of them to do it there's something badly wrong. It's a ludicrous situation." Martin did not even know he was a grandad until he read the...