Your questions would only apply to persons seeking a degree in clinical psychology. My field was experimental social psychology, and my Grad school days were over 50 years ago, so I am not qualified to answer even for then.
And, No, I do not ‘believe her.’ Teasing games between boys and girls in high school and even college were common in my days of adolescence, in the 50’s and 60’s and early 70’s; and that is what her various accounts consistently describe, NOT the “sexual assault” or “attempted rape” she, and the politicized press tried to label the alleged behavior. Lord knows, such tickle and tussle play got out of hand all too often, yet the events testified to don’t seem to me match what usually went on when that happened. But my memories are from 50 years ago, and for all I know the ‘rules of the game’ had changed by 1980. Never-the-less, to ‘believe her’ is to believe that HER memory of an incident 36 years ago is correct, while the memories of the 4 other persons SHE identifies as witnesses are faulty. Preponderance of the evidence.