Final answer:
The most therapeutic statement to make to a patient who has been raped is to reassure her of her safety in the current environment, such as the ambulance.
Step-by-step explanation:
When caring for a 27-year-old female patient who has been raped, the most therapeutic statement you could make is "Please be assured that you are safe from harm here in the ambulance." This statement provides immediate reassurance about the patient's current safety, which is likely a primary concern after such a traumatic incident. It is important to create an environment of security and trust, allowing the patient to feel protected and supported during this critical time.