Alia - whose name we have changed for her safety - travelled hundreds of miles from her village to Kabul to escape marriage. The journey by taxi last year with her female cousin - covered from head to toe, only their eyes visible, as the rules decree - was an exceptional thing to do, and risky in Afghanistan, where at any moment they might be caught by the Taliban inspectors enforcing rules banning women travelling long distances without a male relative escorting them. But Alia, who is 19, and