justice at what cost?

How do you prepare a severely emotionally disturbed eight-year-old to testify in court against her rapist? How do you tell her one day that you will protect her and keep her safe no matter what, and then the next day tell her that she will have to face the man who raped her repeatedly night after night over the course of months? Imagine that she already receives three kinds of therapy, that she's medicated for anxiety and that she has nightmares every night. Imagine that she is so traumatized that she can't even go to the grocery store without a panic attack/dissociative episode. How do you tell her that in less than three weeks her worst fears will come true?