Crosshouse Hospital by her knife-wielding ex-husband.Emma Robertson Coupland lost her life after being ‘knifed’ by deranged Steven Robertson as she left work in Kilmarnock on Thursday night.The 39-year-old’s daughter, Nicole Anderson, 24, was also killed just 20 minutes later after the 40-year-old blade fiend attacked her near her work on Portland Street.The maniac then sped away from the scene before crashing into a tree 12 miles away where he was pronounced dead at the scene.John Burns, chief