I find this case a bit strange.
First of all why didn't the company advise her to contact the police once she reported the alleged rape to them. Even if after the company finishes their investigation and determines that the guy did in fact rape her, what's the most they can do, fire him? Is that enough punishment for a rapist? I think not! If someone ever comes to me with such reports my fist instinct would be to get the police involved. What else can I do?
Second of all why is she suing the company and not the alleged rapist? Are companies responsible for the behaviour of their employees outside duty hours? Or is it because the company has deeper pockets than the alleged rapist?