This book was very effective for her because it paralleled her experience: a prolonged assault involving extensive contact with her attacker. In addition, it addressed the Post Tramautic Stress Disorder (PTSD) problems she has been encountering as a result of the attack.
If someone you love has suffered from an attack, books like this can help both you and them understand what has happened and how they might be feeling. My girlfriend had trouble articulating her feelings about the attack and this book (and others) helped her overcome her difficulties and express herself.