My gf was molested as a teenager.

My gf was molested by her teacher when she was in 8th, 9th and 11th standard. Even though I could accept the fact that she was molested while in 8th or 9th standard, I am not being able to convince myself with the 11th standard incident. This is because of the way she told me about the incident. She presented the story to me in a way like she made out with her teacher. She said, each and every thing in detail in way like she enjoyed it. Even though I was the person who convinced her that she was molested, the picturization of the whole incident is still haunting me. We have had sex several times before she told me about this 11th incident. So, I picturized herself enjoying with that man. Even though I know the truth behind the incident, i am finding it difficult to get over that feeling. I have already discussed the same with her. It's been two months but it's haunting me STI and it's painful. She is loyal and true to me. So these feelings are becoming more painful.