AN Illawarra prostitute who falsified documents to help an under-age girl get work in the sex industry was sentenced to 2 and a half years' jail yesterday.The girl, who was attracted by the money, told police she had to "turn off" to cope with the degradation.Natalie Bertrand, 30, of Albion Park, sat shaking and crying in the dock during sentencing in Wollongong District Court, telling her counsel, Michael Farrer, "I'm scared."She pleaded guilty to intimidation and causing a person under the age of 18 to take part in the act of child prostitution. She had been a friend of the 16-year-old girl's mother, who was also jailed for 2? years for her part in the crime.The court heard the girl became curious about Bertrand's work in late November 2009 when she learned she worked as a prostitute for Liaison's Escort Agency at Edgecliff.During a discussion with the girl and her mother, Bertrand told her that agencies needed proof their workers were 18.The mother got a copy of her daughter's birth certificate and took it to the woman, who modified it to read she was born three years earlier.The mother then emailed it to Liaison's Escort Agency where the girl worked four shifts."During the time at the agency the girl took part in various sexual acts for 15 clients," the facts read."She was subjected to physical violence, mental abuse and was also forced to participate in illegal drug use by clients."The daughter told her father about the work on December 9 and Bertrand was arrested but later phoned the father and told him she was sending somebody around with a shotgun to "blow your daughter's head off".Mr Farrer referred to a psychiatric report that said Bertrand was still suffering from the effects of a stillbirth in 2008.He said she had been trying to get out of prostitution and set up a fashion website.Mr Farrer admitted Bertrand should have tried to dissuade the girl from working in the industry."There was a large measure of neutrality on her part but there was no attempt to coerce this precocious but vulnerable young lady ... it's lamentable but that's the case."Judge Paul Conlon agreed with both Mr Farrer and Crown prosecutor David Williams that Bertrand's role was facilitation rather than coercion.He set a non-parole period of 12 months to date from November 1, when Bertrand was taken into custody for a separate offence.