Sorry but if she’s not willing to name her rapist, then she has no proof she was raped. If she, as a US Senator, does not have the courage to name her attacker, then she either has no business being a Senator or it didn’t happen. In which case she has no business being a US Senator.
If she names her rapist, then we may find out that she was dating him for a while illicitly. And then we may also see how he helped her career. She’s just another effing politician