Her father Graham, a butcher, and her mother Sandra were so protective that she did not have her first sexual relationship until the age of 20 when she went to the New South Wales police academy. I was the only girl in the middle of two brothers and I had a lot of responsibility.'She also had low self-esteem. I never felt attractive.'She married a fellow police officer, John Duncan, and had a high-flying career in undercover drug work and hostage negotiation. They're losers.' Ironically, she thought Fiennes was 'so sensitive, so different'. She has seen last week's reports claiming that he has been dumped by his girlfriend of five months, interior designer Sirin Lewenden, because of his wandering eye, mood swings and constant demands for sex.
Lisa recalled: 'My mother had cancer when I was 11. 'My brothers teased me about being flat-chested, so I've had breast implants. After 14 years her police service ended due to her suffering post-traumatic stress disorder and depression. Indeed, she seems wary of men, saying she has been repeatedly exploited by them. Their romance began after he split from his long-term partner, actress Francesca Annis.
I told him we had to get out of there quickly.'I helped him get dressed and he told me that when he got out of the toilet he would press his call button to distract the other flight attendants so that I could leave.'But a male member of staff saw Ralph come out of the toilet and he saw me lock the door after Ralph.
When I came out, the member of staff was still there.
It was 11pm and most of the other passengers were asleep. He told me he was learning lines for a new movie with Colin Farrell, playing the part of a gangster.
Lisa retired behind the curtained crew area, next to the cockpit, took off her shoes and put her feet up. 'Come in and take a seat.'Lisa is not proud of what happened next, but she found Fiennes 'irresistible'. He said he was practising his cockney accent.'I asked him to give me an example. I told him again that The English Patient was just the best movie, but he said, 'That was over ten years ago. ''I apologised and said I didn't mean to offend him.
But I usually just throw them away.'Lisa had a sheltered upbringing with her two brothers in the town of Wagga Wagga near Sydney.
When rumours first emerged that Ralph Fiennes joined the Five Mile High Club in the business-class lavatory on flight QF123 from Darwin to Bombay, Qantas issued a statement from Lisa vigorously denying the allegation.
But The Mail on Sunday can now reveal the truth about what happened that night - how the English actor had unsafe sex with the 38-year-old Australian stewardess on the flight and went on to seduce her in an evening of almost non-stop love-making at his lavish hotel in India.
"'I said, "No." But she said three people saw me do it.
She told me I had crossed the line and that she was going to report me when we got back to Sydney.'Ralph called me over and asked, "Is everything all right? He was very concerned, but I downplayed it and said I would sort it out.'I knew I was in big trouble.