"Yes, I know I've played these women, but I'm not really conniving at all"

Annette Bening's quote recommends that she understands her previous functions as a conniving lady, however that she does not in fact possess those qualities in her own life. She is indicating that she has the ability to portray a character convincingly, but that she is not really conniving in her own life. This could be interpreted as a declaration of her own integrity and her capability to separate her own life from her acting roles. It might also be seen as a declaration of her respect for the craft of acting, and her ability to populate a character and bring it to life. Ultimately, the quote recommends that Annette Bening is a gifted starlet who is able to portray a wide variety of characters, but that she is not in fact conniving in her own life.