That's not Debbie Rochon in the clips you posted. Debbie Rochon played the mother at the start of the movie.
Thanks Mr L, I should have mentioned I'm not positive about the id on any of these girls... I took my best guess (I should have known Debbie Rochon would'nt have done such a graphic nude scene).
It's a pain in the ass when they list an actress "as so-and-so", but then they never mention "so-and-so" by name during the film. I think the other two are right, but I'm not sure about those either (who cares, they're naked chicks).