Question: Maybe I'm just missing something here, but when Kathryn and Annette talk in the bathroom, why does Kathryn act as though she doesn't know Annette? She obviously knows who she is as she has seen her several times. We know why Annette pretends not to know Kathryn but this bit doesn't make sense.
Question: Were Reese Witherspoon and Ryan Phillippee married before or after this film was made?
Answer: After. They met at Reese's 21st birthday party and subsequently worked together in Cruel Intentions. They wed on the 5th of June, 1999, which was after Cruel Intentions was completed.
Question: How was Annette able to get Sebastian's car after he died? Kathryn probably wouldn't give it to her.
Answer: Sebastian could have had a will and left it to her. Plus she was likely either in jail or rehab after being caught with cocaine, leaving her with little power to do anything about it.
Answer: Well, this is my own opinion, but I think that Annette and Katharine were just pretending not to know each other. Remember, Katharine doesn't know how much Annette knows and Annette knows what kind of deception Katharine is constantly pulling off. I also think that Annette uses the line "turning to God" to foreshadow (and maybe scare) Katharine. Naturally, it didn't work until the journal got out.