If Dylan has convinced herself of the abuse, she could probably pass a lie detector test.
If there was no proof 20 years ago, there probably won't be any found now, no matter how much ink is spilled on the story.
I never was a Woody Allen fan; his movies were a little too parochial, New York, upper middle class Jewish angsty for me.
I always found his brand of comedy a little depressing, actually. A bit morose.