Hi I'm Dr. Manos. I'll give it a try to shed some light on your share. It appears that your girlfriend experienced a vulnerability in being in control and it brought up past experiences and what it meant to her. Much of our pasts are full of what happened and what we thought it meant. Once our "story" about what happened owns us, it's scary confronting it in the present. There is nothing wrong with this human mechanism but it causes grief. Talking with you is helpful but should she consider sharing her concerns with a life counselor or similar professionals. That might be best in the long run.
Sounds like a plan. Good luck. Dr. Manos