This quote from the article in the OP:
''Anna claims this treatment meted out, continued almost unabated for at least the next two months. Concurrently, up to twenty clients per day in Galway paid €80 to €500 to have sex with a gaunt, starved and abused, young woman.''
Assuming this figure is true, (and TORL et al do indeed claim to believe every word of the Anna testimony), these 'clients' will have been well aware that Anna was under duress and suffering serious abuse.
As having sex with a trafficking victim is already illegal and carries very serious penalties, it's fair to ask what possible deterrent criminalising clients would have in this case? If these '20 men a day' were prepared to risk long jail sentences, how is a fine and a minor criminal record going to make the slightest difference?
2014 in Northern Ireland:
Number of reported attacks on sex workers 70
Number of sex trafficking cases ZERO