Tributes have been paid to an NHS worker and her daughter after attacks that left both dead and the man believed to be their killer fatally injured in a car crash. Last night it emerged that Steven Robertson, 40, had posted Facebook rants relating to his ex-wife Emma Robertson Coupland just hours before a series of incidents that caused chaos across Kilmarnock on Thursday night. A video of Robertson later removed from Facebook reportedly included foul-mouthed rants and derogatory comments relating to his ex. Mother of four Emma, 39, was ambushed in the car park of University Hospital Crosshouse near Kilmarnock, at 7.30pm on Thursday night.