From FALLOUT: A Survivor Talks to Incest Offenders (and Others) by moi:

THE SECRET – The goal of grooming is not only to build the child’s trust, but also to ensure that she will keep the secret. At the moment of  the incestuous assault, the victim not only has her lifelong schemas about the world trashed, but is given “the secret” to carry, hidden from everyone else in the world. Having the secret gives her the uninvited power to destroy the family and her father, and drives another wedge into the already troubled relationship with her mother. At that moment, with reality unraveling, keeping the secret means that she is now an accomplice.  Carrying the secret adds to her sense of isolation  and being different from everyone else. All the while, she is fighting the shame  of her out-of-control body’s response. (p. 75)