A barrister accused a girl in a sex case of being coached by her parents and social worker before she came to court, yesterday. Kevin Egan, defending, suggested the 15-year-old girl suddenly remembered the exact date she was allegedly forced to have sex with her karate coach because she had been given help after her morning appearance in the District Court. 'Why is it that after lunch, which you had with your parents and social worker, you were able to tell us the exact date?' Mr Egan asked. 'If you remember now, I suggest that it is because somebody jogged your memory over lunch.' Witnesses are not allowed to speak to anyone about their case once they have been sworn in. Judge Andrew Chung reminded the girl of this as the court broke for lunch, and told her not to speak about it to her parents. The schoolgirl denied she had been coached. During the morning session she did not give an exact date of when her karate coach allegedly had sex with her. She said it was sometime in 'mid-October'. But after lunch she told the court, during her closed-circuit television testimony, that the offence occurred on October 24 last year. The girl also claimed the witness statement she made to police on October 26 was wrong. In the statement the schoolgirl said she had been the one who suggested extra karate practice at the coach's flat. But, yesterday, she said the policewoman who took her statement misunderstood her. The girl told the court her coach, 42, had sex with her last year. 'He said it would transmit his combat might into me and I would perform better in competition,' she said. The girl claimed the coach had oral sex and intercourse with her in his flat. He denies the charge of sex with an underaged girl. The case continues today.