She may blame herself. Get support for yourself You may find you need to talk with a rape counselor also. Be careful about resentment and withdrawing from her. Deal with any guilt you might feel about what happened. Channel any anger you may feel out of you in a non-destructive manner.
Healing takes a long time.
Her memories of the trauma will always be with her. Don't keep your feelings inside. She needs you to be close to her, not distant. No matter how apart you may feel from her, she has needs for security, for safety, for stability, and normalcy.