Older therapist have seen and heard it all. A newer therapist, not so much. It is great that you are answering open and honestly.
Her shock, you should ask her about her reaction. She needs to know that you see her reaction and how it effected you. It will be a bridge between the two of you to clear the air. If she can't handle your honesty, you need to know because she may not be experienced enough to handle your therapy.