That makes sense. A report to the police 30 odd years ago would have been on a local level, so I don't understand the shy victim angle. If no one would believe her then, why would they believe her 30 years later? Anyone rape my wife, she would spend the rest of her days convicting him.... Immediately, if not sooner.
I think if it was not reported to begin with, it should not have any less effect being disproven, especially given the magnitude of Kavanaugh being "tried" in front of God and the entire world.
What I'm trying to say is that had she lied to police to begin with, I understand the consequences. I think lying to Congress should carry the same weight, if not more.