The 1980's and 1990's was the heyday of the now-discredited junk science of "lost memory syndrome". The theory was that sexual assault is so traumatic that the brain blocks out the memory, which can be recovered in dreams or by a therapist suggesting to the patient under hypnosis that she was assaulted. It was the basis of many bullshit sexual assault prosecutions in the late 20th Century before being essentially ripped apart by psychologists and totally discredited. Junk science at its absolute worst!