Whatever you feel, you feel; feelings are never wrong. You sound like a great boyfriend, caring about what your girlfriend went through and not wanting her to be hurt. Did she report the rape, and was it prosecuted? You're doing great, supporting her. It's hard to know something bad happened to someone you care about. I think it would be a good idea to see a therapist as a couple and share the issues both of you deal with, as crystalrose said.