Answer
Cecile Caldwell is a character in the 1999 film Cruel Intentions. She is played by Selma Blair. Cecile is a naive and innocent young woman who is seduced by Sebastian Valmont, a wealthy and manipulative playboy. Sebastian uses Cecile to get revenge on Kathryn Merteuil, his former lover. Cecile is eventually devastated when she learns that she has been used.