dispute was harming the economy and the future of the railway depended on unions working with employers to agree a new way forward. katy austin, bbc news. it has been one year since 12 year old schoolgirl ava white was stabbed to death while watching the christmas lights switch on in liverpool. today ava s family will lead a walk in the city in her memory. it comes with a plea to young people to stop carrying knives after a 15 year old boy was sentenced to life for her murder. andy gill reports. ava white was 12 years old. a year ago she was murdered in out ava white was 12 years old. a year ago she was mur mum in out mia bbc radio mia ava bbc radio was m joker. bbc radio was the popping out, was the she v and the 7 she vand thréme,r she