That characterization itself is a lie. You make it sound like every witness backs up his version - in fact, they really corroborate neither, because most people simply can't remember what happened over 35 years ago.
One of the most amazing things about this entire story is the woeful understanding that people have of trauma memories. When someone goes through this kind of experience, their brain is taken over by fear & panic - and those things inform the memories, as opposed to analytical, normal thinking. The latter doesn't last for 35 years for the most part - the things we remember from that long ago are based more on emotion in general.
And it's why she may remember it, but no one else does. Fear/panic memories leave a much bigger imprint - but they also tend to be more fragmented and incomplete. Some of the memories can be incredibly random - she may forget everything she said she forgot, and remember the color of someone's shirt, or a song that played afterwards. People who question why she didn't remember the date, time, people at the party, house, etc. are really shooting from the hip - they're assuming that trauma memories are exactly like normal memories.
That why we have the police. She never reported it. Why should I believe that it happened with no evidence? No police report? Never told he parents, friends, teachers? LOL you have to be an idiot to find that credible