This is the letter which informed the university that the Department of Education would be looking into UM's policies and responses to complaints of sexual violence.
At first glance, it appears they are looking for both general information (on a year by year basis) on what UM's policies are and specific information (again, on a year by year basis) regarding complaints filed at the school. In other words, they aren't looking just at Gibbons. They are looking at how UM handled every single complaint made from 2011 to 2014 to see if things are being handled properly.
The only reference to a specific complain that I noticed was actually in the first paragraph. It makes reference to a sexual assault allegation filed August 2012 by an unnamed student. I suppose it could be that the victim from the Gibbons case decided in 2012 to make a complaint given the new standard of proof which was part of the interim policy enacted in 2011. Of course, it could be a different student as well.
Anyway, read for yourself.