Emma, then 27, was last seen at a hostel in Glasgow on April 4, 2005.
Her concerned parents reported her missing and her body was found by a dog-walker in remote woodland in Roberton five weeks later.
Emma, originally from Erskine and part of a loving family, had been keen on horses in her younger days, working as a stable girl and hoping to become a riding instructor.
But after her older sister died from cancer, at the age of only 31, she turned to heroin and was working as a prostitute to feed her habit.
Her distraught parents William and Margaret visited Roberton to lay flowers at the spot where she was found, an isolated site with no vehicular access, and leaflets were sent out to homes in the area,
The hunt for her killer took in Carluke at one point, when a friend reported that they had gone to the town on one occasion and met three men.
Four Turkish men were arrested in 2007, but the case against them collapsed.
But details emerged last month of a man, apparently a former client who had allegedly admitted taking Emma a number of times to the forestry track at Roberton.
This weekend the Lord Advocate Frank Mulholland instructed Police Scotland to carry out a reinvestigation into the murder of Emma.
Emma’s father has since died, but the family have been informed of the decision.