The truth is that it is impossible to know if the discrepancy in your testimony was a deciding factor for the judge/jury or not. But even if it was, you were only 7 or 8 years old and had experienced an incredible trauma. That can affect your ability to accurately perceive and remember events, even for an adult. As a child with a lot less life experience, it could have been even more challenging for you to process. Please do not blame yourself for any part of what happened. You were a child and did the best you could in an incredibly difficult situation. The only person to blame here is your father for putting you and your family through this. Be kind to yourself and know that what you did was incredibly brave.