It can be dismissed if she's only going to the press about it just as any non-supported claim against another person should be. Claims that get attention do damage to the other party, whether true or not.
Because of the stance you are taking and that women know must be taken, the door is open for these kinds of wild accusations to grow into narratives that dog the perhaps innocent person for the rest of their careers. If you have something on Biden, get a lawyer and file charges. Cosby's accusers did it the right way. That doesn't mean there are no gold digging s.