I don't know about forgetting. I never forgot my experience but I blanked it out from my mind. Maybe an attempt to forget the whole thing as if it never happened, maybe to protect myself. So for years it remained in the darkest corners never to surface until one day I had a meltdown. The other thing to think is that at that young age, you wouldn't have known or been able to comprehend what was happening to you. It would be akin to a fully grown adult being one day abducted by aliens. You would think what the hell was that? Do you dare tell anybody about it? Will anyone believe you? How do you even begin to describe it? Was it real? Did you imagine it? You can push it out of your mind and try to ignore it but it will have an effect on you. If you are vulnerable (and at a young age you are) then it can be easier for people to use/abuse you. Not sure about forgetting any parts though. I had an out of body experience during. Somehow my body went numb so i didn't feel anything and it was like I was standing outside my body watching what happened to me. I know it definitely happened but so convincingly shut it out.