Karrine Steffans?

Karrine Steffans, girlfriend to political comedian Bill Maher, and author of the New York Times Bestselling "Confessions of a Video Vixen" claims within the pages of her memoir, to star as the character Rachel Hicks, wife to Larenz Tate's character. I saw the movie in theaters and wanting to refresh my memory, I looked up this flick here. Since imdb.com is such a comprehensive resource, I was surprised to see something wasn't adding up (on whose part I don't know.) Why isn't she listed as the character? She claims to have gone by a name she used in her days as a stripper, Yizette in her many liasons, with not only director F. Gary Gray, but also Jay-Z, Ja Rule, DMX, Kool G Rap, etc. Appropriately revealed enough, she claims that her real name never "came out" until lately. However, she also cites that she received a SAG card for the hours put in working on the film.

Does anyone out there have any points on this? Comments? Suggestions on this ommision?