I can imagine not wanting unfounded allegations released, particularly if you think they are false and the folks writing the report / information aren't making good choices. Does anyone want "USC investigators concluded that X" if they really are willing to draw conclusions based on third party's? Maybe they know of something he really did that was bad, or a whole slew of third party rumors that are still.... third party. Even if you think they're wrong we live in a world where just the accusation can impact you, the end results of allowing the school to talk (they've got a big megaphone) may be worse.
Also this applies to the person the school thinks is the victim too.... so if the victim doesn't want it, what are you even talking about, the university being happy to call out a victim?
I think there is a real risk in making decisions on behalf of an adult victim, without their permission. People looking for solutions to problems with unwilling adult victims throw a lot of power to orgnizations who have no involvement / understanding, it's just so easy to step into the absurd that way.
If we really think she's a victim, nothing will ever be solved unless she's willing to do something anyway. Right or wrong, that's how it works.