Conclusion
Lisa is a true exhibitionist in every sense of the word, and I think she explains why without even going into much detail. It is quite true that only an exhibitionist could function on the set of a porn film, because when you think about it, the atmosphere is a rather cold one.
There are camera men walking around, trying to move the cameras so they can get the best angles possible. If a girl couldn't get into sex in an atmosphere like that, it would show in the film, and it does in some of them.
However, if the girl is an exhibitionist, the fact that there are all those men standing around and watching only adds to her acting. She can experience a better and more intense orgasm because of it.
I have seen Lisa in a few films, I should add, and I have to admit that the girl has a great deal of talent for that particular thing. She's quite convincing and even had me aroused. Before she left, I complimented her on her acting credibility and wished her good luck with future endeavors.