Unless they can prove the toxicology reports from UF labs which confirmed no drugs in her system (1 lie) are incorrect or were tampered with, that she really was hit over the head when police reports/exams say she had no injury (2 lies), or Darby/Casher come forward and said they lied (doubtful) I don't know what more ammunition you can show that Winston raped her when all of this is based on a lie that EK has consistently spread.
If/when Casher confirms the oral sex angle, that strikes me as yet another deal-sealer. Yes, rape victims frequently perform fellatio for their assailants. And then they mount the assailant cowgirl style. And then they ride home on the assailant's scooter. Sure. That's what always happens.